Alanine, also known as α-alanine, is an α-amino acid that is used in the biosynthesis of proteins. It contains an amino group and a carboxylic acid group, both of which are attached to the central carbon atom, which also carries a methyl group as a side chain.
L-Citrulline is a naturally occurring amino acid that plays a key role in the urea cycle and is widely used as a supplement to support circulation and athletic performance.
Glutamine is an amino acid that is used for the biosynthesis of proteins. It is important for metabolism, protein synthesis, energy production and supporting the immune system.
Histidine is a semi-essential amino acid that is synthesised in the liver. It is one of the 20 canonical amino acids. Only the enantiomer L-histidine is involved in the formation of human proteins
L-tryptophan is an essential amino acid that the body cannot produce on its own. It serves as a precursor to serotonin and melatonin, playing a key role in sleep, mood, and overall well-being.
L00 is the ICD-10 code for Staphylococcal Scalded Skin Syndrome (SSSS), a severe skin condition caused by staphylococcal toxins, primarily affecting newborns and infants.
L01.1 is an ICD-10 code for impetigo, unspecified. This highly contagious bacterial skin infection commonly affects children, causing itchy blisters and honey-colored crusts.
L02.0 is the ICD-10 code for a furuncle or carbuncle of the face. It describes a deep bacterial skin infection of the hair follicles located in the facial area.
L02.1 is the ICD-10 code for a cutaneous abscess, furuncle, or carbuncle of the neck. It refers to a bacterial skin infection with a localized collection of pus.
L02.2 is an ICD-10 code for a cutaneous abscess, furuncle, or carbuncle of the trunk. These purulent skin infections affect the chest, abdomen, and back.
L02.3 is an ICD-10 code for cutaneous abscess, furuncle and carbuncle of the buttock. These bacterial skin infections cause pain and swelling and often require medical treatment.
L02.4 is the ICD-10 code for a cutaneous abscess of a limb. It refers to a localized collection of pus in the skin or subcutaneous tissue of the arm or leg.
L02.9 is an ICD-10 code for cutaneous abscess, furuncle, or carbuncle at an unspecified body site. These are typically painful, bacteria-driven pus-filled lesions of the skin.
L03.1 is the ICD-10 code for cellulitis of the finger and toe – a bacterial soft tissue infection that requires prompt medical evaluation and treatment.
L03.2 is the ICD-10 code for cellulitis of the toe, a bacterial infection of the subcutaneous tissue causing redness, swelling, and pain at the affected toe.
L03.8 is an ICD-10 diagnosis code for cellulitis and phlegmon of other sites. It describes a bacterial skin infection that can affect deeper tissue layers.
L03.9 is the ICD-10 code for cellulitis, unspecified. It describes a diffuse bacterial soft tissue infection without a precisely defined anatomical location.
L04.1 is the ICD-10 code for acute lymphadenitis of the neck – a sudden inflammation of the cervical lymph nodes, most commonly caused by bacterial infections.
L04.2 is the ICD-10 code for acute lymphadenitis of the face, head, and neck. It describes an inflammation of lymph nodes, most commonly caused by a bacterial infection.
L04.3 is the ICD-10 code for acute lymphadenitis of the lower limb and hip. It describes a sudden, painful inflammation of lymph nodes in the leg or hip area, most often caused by a bacterial infection.
L04.8 is the ICD-10 code for acute lymphadenitis of other sites – a painful inflammation of lymph nodes occurring outside the classically defined body regions.
L04.9 is the ICD-10 code for acute lymphadenitis, unspecified. It describes a sudden inflammation of one or more lymph nodes without a documented specific location or cause.
L05.9 is the ICD-10 code for pilonidal sinus without abscess, a cyst or channel near the tailbone often caused by ingrown hairs. It may cause pain and discharge.
L08.1 is the ICD-10 code for erythrasma, a superficial bacterial skin infection caused by Corynebacterium minutissimum, presenting with reddish-brown skin patches.
L08.9 is the ICD-10 code for a local infection of the skin and subcutaneous tissue, unspecified. It refers to an infection of skin tissue caused by bacteria, fungi, or other pathogens.
L10.5 is the ICD-10 code for pemphigus vegetans, a rare autoimmune skin disorder characterized by blister formation and warty, vegetating skin lesions.
L10.9 is the ICD-10 code for pemphigus, unspecified. It refers to a rare autoimmune skin disease characterized by blister formation on the skin and mucous membranes.
L11.0 is an ICD-10 diagnosis code for acquired keratosis follicularis, also known as Darier disease. A rare chronic skin condition involving abnormal skin keratinization.
L11.8 is an ICD-10 code for other specified acantholytic disorders – rare skin conditions characterised by a loss of cell-to-cell cohesion in the epidermis.
L11.9 is an ICD-10 diagnosis code for an unspecified acantholytic disorder. It describes skin conditions characterised by loss of cell cohesion within the epidermis.
L12.2 is the ICD-10 code for Chronic Bullous Disease of Childhood, a rare autoimmune skin condition causing large blister-like lesions in young children.
L13.0 is the ICD-10 code for dermatitis herpetiformis Duhring, a chronic blistering skin disease with intense itching closely associated with gluten intolerance (coeliac disease).
L13.1 is the ICD-10 code for subcorneal pustular dermatosis (Sneddon-Wilkinson disease), a rare chronic skin condition characterized by sterile pustules beneath the skin surface.
L13.8 is the ICD-10 code for other specified bullous disorders – skin conditions characterised by blister formation that do not fall into other specific bullous disease categories.
L13.9 is an ICD-10 diagnosis code for an unspecified bullous disorder. It describes a group of skin conditions characterised by blister formation of unknown or non-specific origin.
L14 is an ICD-10 diagnosis code for bullous skin disorders in diseases classified elsewhere. It describes blistering skin changes as a secondary manifestation of an underlying condition.
L50.0 is the ICD-10 code for allergic urticaria (hives) – an immune-mediated skin reaction causing itchy welts, triggered by allergens such as food or medications.
L50.3 is the ICD-10 code for cold urticaria, a physical allergic skin reaction causing hives, itching, and swelling after exposure to cold temperatures.
L50.4 is the ICD-10 code for cold urticaria, a skin condition triggered by cold stimuli such as cold air, water, or objects, causing hives and itching.
L50.5 is the ICD-10 code for pressure urticaria, a skin condition in which sustained pressure on the skin triggers wheals and swelling. It belongs to the group of physical urticarias.
L50.8 is the ICD-10 code for other urticaria, covering forms of hives not classified elsewhere. It is a skin condition characterised by wheals, redness, and itching.
L50.9 is the ICD-10 code for urticaria, unspecified, commonly known as hives. It describes a skin condition with wheals and itching of unspecified cause.
Laboratory diagnostics involves the analysis of body samples such as blood, urine, or tissue to detect, monitor, and guide the treatment of medical conditions.
Laboratory value interpretation is the professional evaluation of medical test results from blood, urine, or tissue samples to support diagnosis and treatment decisions.
Labrum refixation is a surgical procedure to reattach a torn labrum at the shoulder or hip joint, restoring stability and function to the affected joint.
Labyrinthula sp. are unicellular, marine-associated protists known as plant pathogens that can infect marine seagrass meadows and other marine organisms.
Lace-Compression Syndrome refers to nerve and tissue damage caused by overly tight shoelaces. It causes numbness, tingling, and pain on the top of the foot.
An enzyme that breaks down lactose into glucose and galactose. It is important for the digestion of dairy products and is used to treat lactose intolerance.
Lactate is a metabolic byproduct formed during energy production without sufficient oxygen. It plays a key role in sports medicine, emergency care, and critical care.
Lactate dehydrogenase (LDH) is an enzyme found in nearly all body cells and plays a key role in energy metabolism. Elevated LDH levels in the blood can indicate tissue damage or disease.
Lactate dehydrogenase deficiency is a rare inherited metabolic disorder in which the enzyme lactate dehydrogenase does not function adequately, leading to exercise intolerance and muscle pain.
Lactate dehydrogenase elevation refers to abnormally high LDH levels in the blood, which can indicate tissue damage, inflammation, or various underlying medical conditions.
Lactate dehydrogenase therapy refers to therapeutic approaches targeting the enzyme lactate dehydrogenase (LDH) to treat metabolic disorders and cancer.
Lactate kinase activity refers to the enzymatic activity involved in lactate metabolism. It plays a key role in energy production in muscle and body cells.
Lactate kinase diagnostics refers to laboratory methods used to measure lactate and creatine kinase in the blood. These tests help detect muscle damage, heart attacks, and metabolic disorders.
Lactate measurement is a diagnostic procedure used to determine the concentration of lactate in the blood. It helps assess tissue oxygenation and is widely used in emergency medicine and sports diagnostics.
Lactate metabolism describes the production, transport, and breakdown of lactate in the human body – a key process during physical exertion and energy supply.
Lactate metabolism markers are laboratory values that reflect the production and clearance of lactate in the body, used to assess tissue oxygenation and energy metabolism.
Lactate metabolism optimization refers to strategies that improve the production, transport, and utilization of lactate in the body, relevant for sports, rehabilitation, and metabolic conditions.
Lactate production refers to the formation of lactate in the body, especially during intense physical exercise or oxygen deficiency. It is a key process in energy metabolism.
Lactate production analysis measures the amount of lactate produced by the body, providing key insights into metabolism, physical performance, and potential medical conditions.
The lactate shuttle describes the transport of lactate between cells and tissues as a key energy carrier in metabolism. It plays a central role in sports science, medicine, and recovery.
Lactate tolerance describes the body's ability to efficiently manage and clear lactic acid produced during intense physical exercise, enabling sustained high-level performance.
Lactate tolerance markers are biochemical indicators that reflect the body's ability to produce, transport, and metabolize lactate efficiently. They are key tools in sports medicine and critical care.
Lactate tolerance optimization refers to targeted training that improves the body's ability to buffer, tolerate, and clear lactate, enabling higher performance during intense exercise.
The lactate tolerance test is a diagnostic procedure used to assess the body's ability to process lactate, commonly applied in sports and performance medicine.
The lactate-pyruvate ratio is a diagnostic laboratory value describing the relationship between lactate and pyruvate in blood or cerebrospinal fluid, indicating disturbances in cellular energy metabolism.
Lactation consulting supports breastfeeding mothers with questions and challenges related to nursing. Certified professionals help establish and maintain a successful breastfeeding relationship.
Lactic acid (lactate) is an organic acid produced naturally in the body during energy metabolism. It plays a key role in muscle physiology, diagnostics, and food production.
Lactic acid fermentation is a natural process in which sugars are converted into lactic acid by bacteria. It plays a key role in food production and in the metabolism of the human body.
Lactic acidosis is a dangerous condition in which lactic acid builds up in the bloodstream, causing the blood to become too acidic. It requires immediate medical attention.
Lactic acidosis markers are diagnostic parameters measured in the blood that indicate dangerous over-acidification of the body due to elevated lactate levels. They are essential for early detection and monitoring of critical conditions.
Lactic acidosis prophylaxis includes measures to prevent a dangerous build-up of lactic acid in the blood. It is especially important in high-risk patients taking certain medications or with underlying conditions.
Lactic acidosis therapy encompasses all medical measures to treat a dangerous drop in blood pH caused by elevated lactate levels. Treatment focuses on eliminating the underlying cause and restoring metabolic balance.
Lactitol (E966) is a low-calorie sugar substitute derived from lactose, used in food production and medicine. It acts as a mild laxative and is suitable for people with diabetes.
Lacto-N-Tetraose (LNT) is a naturally occurring human milk oligosaccharide that promotes beneficial gut bacteria growth and supports the immune development of infants.
A genus of probiotic bacteria known for their positive effects on intestinal health and the immune system. They help with digestion and the fight against harmful microorganisms.
A Lactobacillus strain is a specific, genetically defined variant of the Lactobacillus genus, used as a probiotic to support gut health, vaginal flora, and immune function.
Lactococcus is a genus of lactic acid-producing bacteria with probiotic potential. Used in yoghurt, intestinal health, immune modulation and skin care - versatile and functional.
Lactoferrin bioavailability refers to how efficiently lactoferrin is absorbed and utilized by the body after ingestion. It is key to the protein´s immunological and antimicrobial effectiveness.
Lactoferrin CLN® is a highly pure, bioactive protein to support iron deficiency, infections and intestinal diseases - immunomodulating, anti-inflammatory and versatile.
A lactoferrin supplement refers to the targeted addition of lactoferrin to foods or dietary supplements to support immune function and iron absorption.
Lactoperoxidase is a natural enzyme with an antimicrobial effect that protects mucous membranes and supports the immune defence. Find out more about its functions, areas of application and mechanism of action.
Lactose is the natural sugar in dairy products. Find out what happens in the body with lactose intolerance, which symptoms are typical and how a lactose-free diet can help.
Lactose intolerance symptoms include bloating, abdominal pain and diarrhea after consuming dairy products. Learn which complaints are typical and how to manage them.
The lactose intolerance test is a diagnostic procedure used to determine whether a person is unable to properly digest lactose, the sugar found in milk and dairy products.
Lactose monohydrate is a crystalline form of milk sugar widely used as a filler and carrier in pharmaceutical tablets, capsules, and dry powder inhalers.
Lactose-free whey is a high-quality protein supplement derived from milk whey, specially processed to remove or minimize lactose for better digestive tolerance.
Lactulose is a synthetic disaccharide used as a laxative and in the treatment of hepatic encephalopathy. It acts osmotically in the colon and is not absorbed by the body.
Frauenmantel (Alchemilla vulgaris) ist eine altbewährte Heilpflanze in der Frauenheilkunde und wird traditionell bei Menstruationsbeschwerden, Zyklusstörungen, bei Kinderwunsch oder in den Wechseljahren eingesetzt.
LAIV (Live Attenuated Influenza Vaccine) is a nasal spray flu vaccine containing weakened live influenza viruses, used primarily in children and adolescents.
The Lancefield classification is a microbiological system for grouping beta-hemolytic streptococci based on carbohydrate antigens in their cell wall, divided into groups A through W.
Langerhans cells are specialized immune cells located in the skin that act as a first line of defense against pathogens and foreign substances, playing a key role in immune surveillance.
Language development is the natural process by which children learn to speak, understand, and use language. It begins in infancy and progresses through well-defined developmental stages.
Lansoprazole is a proton pump inhibitor that reduces stomach acid production. It is used to treat heartburn, peptic ulcers, and gastroesophageal reflux disease.
The Lanz point is an anatomical pressure point in the right lower abdomen used to detect appendicitis. It lies between the right and middle third of the line connecting both anterior superior iliac spines.
Laparoscopic cholecystectomy is a minimally invasive surgical procedure to remove the gallbladder. It is the gold standard treatment for gallstones and offers faster recovery than open surgery.
Laparoscopic prostatectomy is a minimally invasive surgical procedure to remove the prostate gland, most commonly used to treat prostate cancer. Small incisions and a camera allow for a gentle and precise operation.
Laparoscopy is a minimally invasive surgical procedure used to examine and treat the abdominal cavity. Small incisions are made and a camera is inserted to guide the surgeon.
The large intestine is responsible for absorbing water and electrolytes, forming solid stool, and housing the gut microbiome that supports digestion and immunity.
Laryngeal cancer is a malignant tumor of the larynx (voice box), most commonly linked to smoking and alcohol use. When detected early, treatment outcomes are generally very good.
Laryngeal cancer symptoms include persistent hoarseness, difficulty swallowing, and neck swelling. Early detection significantly improves treatment outcomes.
Laryngitis is an inflammation of the larynx, most commonly caused by viral infections, vocal strain, or irritants, and is characterized by hoarseness or loss of voice.
Laryngitis in children is an inflammation of the larynx often causing hoarseness, a barking cough, and breathing difficulties. Learn about causes, symptoms, and treatment options.
Laryngitis is an inflammation of the larynx that typically causes hoarseness, voice loss, and a sore throat. Learn about the key symptoms and when to seek medical advice.
The larynx, commonly known as the voice box, is an organ in the throat that enables speech and protects the lower airways from food and liquids entering.
The Lasègue sign is a clinical test used to detect sciatica or a herniated disc. A positive result occurs when raising the straightened leg causes radiating pain along the sciatic nerve.
LASIK is a laser-assisted eye surgery used to permanently correct nearsightedness, farsightedness, and astigmatism. The procedure is quick, nearly painless, and highly effective.
Lassa-Fieber ist eine durch Nagetiere übertragene Viruserkrankung mit hämorrhagischem Verlauf. Erfahre alles über Symptome, Risiken, Therapie und Schutzmaßnahmen gegen das Virus in Westafrika.
A late-phase reaction is a delayed immune response that occurs hours to days after exposure to a triggering substance. It is commonly associated with allergies and hypersensitivity.
The latency period is the time between a triggering event and the appearance of a measurable response, such as the interval between infection and onset of disease.
Latent Autoimmune Diabetes in Adults (LADA) is a slow-progressing autoimmune form of diabetes that begins in adulthood. It is frequently misdiagnosed as type 2 diabetes in its early stages.
The latent iron binding capacity (LIBC) is a laboratory value that indicates how much additional iron the blood can still absorb. It is used to diagnose iron deficiency or iron overload.
A lateral ankle ligament tear is a complete rupture of the outer ligaments of the ankle joint. It is most often caused by rolling the ankle inward and is one of the most common sports injuries.
Lateral ligament reconstruction is a surgical procedure to restore the stabilising ligaments on the outer side of the ankle joint in cases of chronic instability.
The lateral malleolus is the bony prominence on the outer side of the ankle, formed by the lower end of the fibula. It stabilizes the ankle joint and is a common site of injury.
Lateral malleolus osteosynthesis is a surgical procedure to stabilize a fractured lateral malleolus using screws, plates, or wires to restore ankle joint function.
A lateral mass fracture is a break in the bony lateral blocks of the first cervical vertebra (atlas, C1). It is often caused by axial compression and requires prompt imaging and assessment.
A lateral neck cyst is a congenital, benign fluid-filled sac on the side of the neck, arising from remnants of embryonic branchial arch tissue. It is often first noticed in childhood or early adulthood.
Lateral pharyngitis is an inflammation of the lateral bands of the throat lining. It causes sore throat, difficulty swallowing, and often occurs after tonsil removal.
The lateral rectus muscle is one of six extraocular muscles responsible for moving the eye outward. It is innervated by the abducens nerve (cranial nerve VI).
Lauric acid is a saturated medium-chain fatty acid found predominantly in coconut oil and palm kernel oil. It is widely studied for its antimicrobial and metabolic properties.
A laxative enzyme is an enzyme that supports digestion and stimulates bowel movement to relieve constipation. Such enzymes are used in dietary supplements and medical preparations.
Laxative tea is an herbal tea used to relieve occasional constipation. It contains natural plant compounds that stimulate bowel movement and help ease stool passage.
Laxatives are substances that promote bowel movements and are used to relieve constipation. They are available over the counter in several different classes.
The LDL-C target value defines the desired maximum level of LDL cholesterol in the blood to reduce the risk of heart disease. It is set individually based on a patients cardiovascular risk profile.
Le Fort osteotomy is an oral and maxillofacial surgical procedure to correct misalignments of the upper jaw. Depending on the type, different bone levels of the midface are cut and repositioned.
Lead sugar (lead acetate) is a toxic lead compound historically used as a sweetener. Today it is recognized as a hazardous substance causing serious health risks.
A leading symptom is the dominant clinical sign that guides a physician toward a specific diagnosis. It forms the foundation of the medical diagnostic process.
Leaky gut refers to increased intestinal permeability, where the gut lining becomes weakened and allows harmful substances to enter the bloodstream, potentially triggering inflammation.
Leaky gut syndrome, also known as "permeable bowel", describes a disease in which the intestinal mucosa is damaged and the barrier function of the intestine is disrupted as a result.
The leaky gut test evaluates the permeability of the intestinal lining. It helps identify increased intestinal permeability, commonly known as leaky gut syndrome.
Lean Body Mass (LBM) refers to all body weight excluding fat tissue, including muscles, bones, organs, and water. It is a key indicator of health and physical performance.
Lecithin ist eine natürliche Fettverbindung (Phospholipid), die in allen Zellmembranen des Körpers vorkommt und eine entscheidende Rolle für den Fettstoffwechsel, die Zellstruktur und die Gehirnfunktion spielt.
Ledderhose disease is a benign condition of the foot in which fibrous nodules develop in the plantar fascia. These nodules can cause pain when walking or standing.
Die Blutegeltherapie ist ein traditionelles naturheilkundliches Verfahren, das seit Jahrhunderten zur Behandlung von Entzündungen, Schmerzen und Durchblutungsstörungen eingesetzt wird.
Left bundle branch block is a cardiac conduction disorder in which the electrical impulse is delayed or blocked in the left branch of the heart conduction system.
The leg is the lower extremity of the human body, comprising the thigh, knee, lower leg, and foot. It enables locomotion, stability, and weight transfer.
A leg muscle biopsy is a diagnostic procedure in which a small tissue sample is taken from a leg muscle to investigate muscle diseases and unexplained muscle weakness.
Legionella pneumonia is a severe bacterial lung infection caused by Legionella bacteria. It typically occurs after inhaling contaminated water droplets from artificial water systems.
Legionella pneumophila is a gram-negative waterborne bacterium that causes Legionnaires disease, a severe form of pneumonia. Infection occurs through inhaling contaminated water droplets.
Legionellen sind wasserliebende Bakterien, die sich in technischen Wassersystemen vermehren und beim Menschen schwere Atemwegsinfektionen auslösen können.
Legionellosis is a bacterial infection caused by Legionella bacteria, primarily affecting the lungs. It is transmitted by inhaling contaminated water droplets or aerosols.
Factor V Leiden is a genetic mutation that increases the risk of blood clots. It is the most common hereditary cause of excessive blood clotting (thrombophilia).
Canine leishmaniasis is a parasitic disease transmitted by sandfly bites, affecting a dog's skin, organs, and immune system. Early diagnosis and treatment are essential for managing the condition effectively.
Lemon balm (Melissa officinalis) is a medicinal herb known for its calming properties. It is traditionally used for stress, sleep problems, and digestive complaints.
Lemongrass is an aromatic medicinal plant with digestive, antispasmodic and anti-inflammatory properties. Learn about its active compounds, applications and safety.
Lens lectin (LCA) is a plant-derived carbohydrate-binding protein from lentil seeds used in biomedical research, diagnostics, and glycoprotein analysis.
Lenvatinib is a prescription cancer medication that inhibits tumor growth by blocking key signaling pathways. It is used to treat several types of advanced cancer.
The Lenzmann line is an anatomical reference line used in radiology to assess the geometry of the shoulder joint. It helps identify malalignment and instability of the glenohumeral joint.
The Lenzmann point is a clinical pressure point on the abdomen used in physical examination to help diagnose appendicitis and other right lower abdominal conditions.
The Leopold maneuvers are four standardized abdominal palpation techniques used during pregnancy to assess the position, presentation, and size of the unborn baby.
Leptin deficiency causes extreme hunger, uncontrolled weight gain, and metabolic disorders. Learn about the symptoms, causes, and treatment options available.
Leptin resistance is a metabolic condition in which the body no longer responds adequately to the satiety hormone leptin, often contributing to obesity and metabolic disorders.
Leschke syndrome is a rare endocrine disorder characterized by skin pigmentation abnormalities, diabetes mellitus, and autonomic nervous system dysfunction affecting multiple glands.
A lesion is any area of tissue that has been damaged or altered by disease, injury, or external factors. The term is used across virtually all medical specialties.
Leukämie ist eine bösartige Erkrankung des blutbildenden Systems, bei der es zu einer unkontrollierten Vermehrung unreifer weißer Blutkörperchen kommt.
Leukocoria refers to a whitish reflex in the pupil of the eye, which can indicate serious ocular conditions. Immediate ophthalmological evaluation is strongly recommended.
Leukocyte infiltration describes the migration of white blood cells into tissue in response to inflammation or infection. It is a key component of the immune response.
Leukocyte migration describes the directed movement of white blood cells from the bloodstream into surrounding tissue – a key process of the immune defense.
Leukocyte morphology refers to the microscopic evaluation of white blood cells. It is a key diagnostic tool in haematology for detecting blood disorders and infections.
Leukoplakia refers to white patches on mucous membranes, most commonly inside the mouth. It is considered a potentially malignant lesion requiring early diagnosis and monitoring.
Leukotriene inhibitors are medications that block inflammatory signaling molecules called leukotrienes. They are primarily used to treat asthma and allergic rhinitis.
Leukotrienes are pro-inflammatory signaling molecules produced by the immune system, playing a key role in asthma, allergies, and other inflammatory conditions.
Leuprolide (leuprorelin) is a GnRH agonist medication that lowers testosterone and estrogen levels, used to treat hormone-sensitive conditions such as prostate cancer and endometriosis.
A ligament injury refers to the stretching, partial tearing, or complete rupture of a ligament. It commonly results from sudden twisting or overextension and most often affects the ankle or knee joint.
Ligament instability refers to excessive joint movement caused by damaged or overstretched ligaments. It can lead to pain, swelling, and an increased risk of falls.
A ligament sprain occurs when ligaments are overstretched, most commonly at the ankle or knee. It causes pain and swelling but generally heals well with proper treatment.
A ligament tear in the foot is a complete rupture of one or more ligaments, often caused by twisting the ankle. Learn about causes, symptoms, and treatment options.
The ligamentum capitis femoris is an intra-articular ligament of the hip joint connecting the femoral head to the acetabulum, contributing to joint stability and blood supply.
The ligamentum costoxiphoideus is a ligament of the thorax connecting the xiphoid process of the sternum to the adjacent rib cartilages, contributing to the structural stability of the chest wall.
The ligamentum hepatoduodenale is a peritoneal fold in the abdominal cavity connecting the liver and duodenum. It contains key structures including the bile duct, portal vein, and hepatic artery.
The ligamentum hepatogastricum is a peritoneal fold connecting the liver to the lesser curvature of the stomach, forming the left portion of the lesser omentum.
Lightening contractions are mild, irregular uterine contractions in the final weeks of pregnancy that help move the baby's head into the pelvis, signaling the body is preparing for labor.
The limbus acetabuli is the fibrocartilaginous rim of the hip socket that surrounds the femoral head, deepening the joint and contributing to hip stability.
A limitation refers to the reduction or partial loss of a physical, mental, or functional ability. It can result from illness, injury, or age-related changes and affects quality of life.
The limiting amino acid is the essential amino acid found in the lowest quantity relative to human requirements in a food protein, thereby determining the overall protein quality.
Limonene is a natural aromatic compound found in citrus fruit peel with antioxidant properties. It is widely used in food, cosmetics, and natural health applications.
Lincosamides are a class of antibiotics used against gram-positive bacteria and anaerobes. They inhibit bacterial protein synthesis and are used to treat skin, bone, and respiratory tract infections.
The lingual frenulum is a small fold of mucous membrane beneath the tongue that affects its mobility. A short frenulum can make speaking and breastfeeding more difficult.
The lingual tonsil is lymphatic tissue located at the base of the tongue. It forms part of the immune system and can become inflamed, causing throat and swallowing problems.
The lining-up phenomenon describes the repetitive behavior of arranging objects in rows or lines, commonly seen in autism spectrum disorder. It is considered an early indicator of developmental differences.
Linoleic acid is an essential omega-6 fatty acid that the human body cannot produce on its own and must therefore be obtained through diet. It plays a key role in cell membranes, inflammatory processes, and fat metabolism.
Lipemia refers to an elevated concentration of fats in the blood, causing a milky or turbid appearance of blood serum. It may indicate an underlying metabolic disorder.
The Lipid Accumulation Product Index (LAP) is a clinical marker used to assess visceral fat accumulation and cardiometabolic risk in adults based on waist circumference and triglyceride levels.
The lipid barrier is a natural layer of fats on the skin that protects against moisture loss and external irritants, playing a key role in maintaining healthy skin.
A lipid infusion is an intravenous administration of fat emulsions used for nutritional support or medical treatment. It is primarily used in parenteral nutrition and lipid rescue therapy.
Lipid kinases are enzymes that chemically modify lipids through phosphorylation, thereby controlling key signaling pathways inside cells. They play a central role in metabolism, cell growth, and immune function.
The lipid membrane is the fundamental envelope of every biological cell. It consists of a double layer of fat molecules and controls the transport of substances into and out of the cell.
Lipid metabolism encompasses all processes by which fats are absorbed, transported, converted, and used in the body. It is essential for energy supply and overall health.
Lipid metabolism diagnostics involves blood tests to measure cholesterol and triglyceride levels. It helps detect cardiovascular risk factors and lipid disorders at an early stage.
A lipid metabolism disorder is an abnormal change in blood fat levels, such as elevated cholesterol or triglycerides. It significantly increases the risk of cardiovascular disease.
Lipid metabolism kinetics describes the time-dependent processes and rates of biochemical reactions in fat metabolism, from lipid absorption to transport and breakdown in the body.
Lipid metabolism optimization refers to targeted measures to improve the balance of fats in the blood. The goal is a healthy cholesterol and triglyceride profile to protect cardiovascular health.
Lipid metabolism optimization markers are laboratory values that measure the state and efficiency of fat metabolism in the body and are used to optimize lipid health.
Lipid metabolism regulation controls how the body absorbs, transports, stores, and breaks down fats. It plays a key role in energy balance, cardiovascular health, and hormone production.
Lipid oxidation markers are measurable substances in blood or tissue that indicate oxidative damage to fats and serve as biomarkers for oxidative stress in the body.
A lipid panel is a blood test that measures different types of fats in the blood. It helps assess the risk of heart disease and cardiovascular conditions.
Lipid peroxidation is the oxidative degradation of fats in cell membranes caused by free radicals. It plays a key role in aging and the development of many chronic diseases.
Lipid peroxidation markers are measurable substances in blood or tissue that indicate oxidative stress. They help detect cell damage caused by free radicals at an early stage.
Lipid peroxidation protection refers to biological mechanisms and substances that shield cell membranes from oxidative damage caused by free radicals, keeping cells healthy.
Lipid therapy includes medical measures to lower elevated blood fat levels, reducing the risk of cardiovascular disease such as heart attack and stroke.
Lipid-lowering refers to measures that reduce elevated blood fat levels. It protects against cardiovascular disease through lifestyle changes and medications such as statins.
Lipid-lowering agents are medications used to reduce elevated blood fat levels such as cholesterol or triglycerides, thereby lowering the risk of heart attack and stroke.
Lipids are fat-like molecules that serve as energy sources, cell membrane components, and signaling substances. They include fats, oils, cholesterol, and phospholipids.
Lipogenesis is the biochemical process by which the body converts carbohydrates and other nutrients into fatty acids and fat tissue. It plays a key role in energy metabolism.
Lipohypertrophy is a localized thickening of the fatty tissue beneath the skin, most commonly caused by repeated insulin injections. It leads to firm lumps and can impair insulin absorption.
Ein Lipom ist eine gutartige Fettgeschwulst, die aus Fettzellen (Adipozyten) besteht und sich unter der Haut bildet. Lipome sind die häufigsten gutartigen Weichteiltumoren und in den meisten Fällen völlig harmlos. Sie wachsen langsam, sind weich und verschieblich und verursachen in der Regel keine Schmerzen.
Lipopolysaccharide (LPS) is a key component of the outer membrane of gram-negative bacteria and is a potent activator of the human immune system, playing a central role in infections and inflammatory responses.
Lipoprotein lipase (LPL) is a key enzyme in fat metabolism that breaks down triglycerides from the bloodstream, supplying muscles and fatty tissue with energy.
Lipoprotein metabolism describes how fats are transported and processed in the blood. Disruptions can significantly increase the risk of cardiovascular disease.
Liraglutide is a medication used to treat type 2 diabetes and obesity. It mimics the gut hormone GLP-1, helping to lower blood sugar and reduce appetite.
Listeriosis is a bacterial infection caused by Listeria monocytogenes, transmitted through contaminated food, and particularly dangerous for pregnant women and immunocompromised individuals.
Lithium orotate is a compound of lithium and orotic acid used as a dietary supplement, believed to support mood stability and offer neuroprotective benefits.
A lithopedion is a deceased fetus that calcifies inside the body and may remain undetected for years or even decades. It is an extremely rare medical phenomenon.
A liver biopsy is a medical procedure in which a small sample of liver tissue is removed and examined under a microscope to diagnose and evaluate liver conditions.
Liver cell activation refers to the stimulation of liver cells (hepatocytes) to enhance their metabolic and regenerative functions. It is key to overall liver health.
Liver cell detoxification refers to the biochemical processes by which liver cells neutralize and eliminate harmful substances. It is essential for the health of the entire body.
Liver cell markers are laboratory values that provide information about the condition of liver cells. Elevated levels may indicate damage or disease of the liver.
Liver cell protection refers to measures and substances that shield liver cells from damage and support their regeneration. It plays a key role in maintaining overall liver health.
Liver cell regeneration refers to the liver´s remarkable ability to renew damaged or lost liver cells (hepatocytes) through cell division, restoring normal organ function after injury.
Liver cell therapy is a medical procedure in which healthy liver cells are transplanted into a patient to restore or support liver function in cases of liver disease.
The liver cell therapy profile is a diagnostic panel of laboratory values used to assess the health and function of liver cells. It helps detect liver damage at an early stage.
A liver detox protocol is a structured plan to support the liver's natural detoxification functions through targeted nutrition, lifestyle changes, and key nutrients.
An unhealthy diet, alcohol, environmental toxins and stress can overload the liver. Regular detoxification of the liver can help to relieve this important organ and promote general health.
Liver fat content refers to the percentage of fat stored in liver tissue. A value above 5 percent is considered a fatty liver and should be evaluated by a doctor.
A liver function analysis is a group of blood tests that assess the health and performance of the liver. It measures key liver markers and helps detect liver disease at an early stage.
Liver function markers are blood test values that provide information about the health and function of the liver. They help doctors detect and monitor liver diseases at an early stage.
Liver function optimization refers to targeted measures that support and improve liver health through nutrition, lifestyle changes, and specific supplements.
Liver function regeneration refers to the liver´s remarkable ability to repair damaged tissue and restore its vital functions. It is a key process in hepatology and liver medicine.
A liver function test is a blood test used to assess the health and functioning of the liver. It measures key enzymes, proteins, and substances in the blood.
Liver function tests are blood tests used to assess the health and function of the liver. They help detect and monitor liver diseases at an early stage.
Liver inflammation markers are blood values that indicate inflammation or damage to the liver. They help doctors detect and monitor liver diseases at an early stage.
Liver metabolism encompasses all biochemical processes of the liver, including detoxification, nutrient processing, and production of vital substances.
Liver regeneration refers to the remarkable ability of the liver to restore lost or damaged tissue on its own, making it the most regenerative internal organ in the human body.
Liver remodeling markers are laboratory values that indicate remodeling processes in liver tissue and are used in the diagnosis of liver fibrosis and liver cirrhosis.
A liver rupture is a tear or laceration of the liver, most commonly caused by blunt abdominal trauma. It is a medical emergency with a risk of life-threatening internal bleeding.
Liver stiffness describes the hardening of liver tissue caused by scarring (fibrosis). It is measured to assess the severity of liver disease non-invasively.
Liver values in blood tests are laboratory parameters that reflect the health and function of the liver. Abnormal results may indicate liver damage or disease.
LL-37 is an endogenous antimicrobial peptide of the cathelicidin family that plays a central role in innate immunity and possesses immunomodulatory and anti-inflammatory properties.
Load management refers to the systematic planning and adjustment of physical training demands to achieve optimal health and performance outcomes while preventing overtraining and injury.
Lobar pneumonia is a bacterial lung infection affecting an entire lobe of the lung. It typically presents with sudden onset and requires prompt medical treatment.
A lobotomy is a historical neurosurgical procedure in which connections in the frontal lobe of the brain were severed. It is now considered obsolete and ethically unacceptable.
Lochia is the natural vaginal discharge that occurs after childbirth. It lasts approximately 4 to 6 weeks and is a normal part of the postpartum recovery process.
Loganin is a plant-derived iridoid glycoside found naturally in various medicinal plants and studied for its anti-inflammatory and neuroprotective properties.
Long COVID, auch bekannt als Post-COVID-Syndrom, beschreibt eine Vielzahl von anhaltenden oder neu auftretenden Beschwerden, die Wochen bis Monate nach einer akuten COVID-19-Infektion bestehen bleiben.
The HbA1c value shows the average blood glucose level over the last few weeks. Find out which values are healthy and how you can lower your long-term glucose level naturally.
Long-term effects of tamoxifen are side effects that can occur after prolonged use or after discontinuation, including uterine changes, bone loss, and cardiovascular risks.
Long-term therapy refers to ongoing medical treatment for chronic conditions. Its goals include symptom control, prevention of complications, and maintaining quality of life.
A long-term therapy schedule is a structured medical treatment plan designed for the continuous management of chronic conditions. It defines medications, dosages, and intake intervals on an ongoing basis.
Longevity medicine is a field of modern medicine focused on extending the healthy human lifespan and preventing age-related diseases through evidence-based interventions.
Longevity supplements are dietary supplements aimed at slowing cellular aging and extending healthspan. This list provides an evidence-based overview of the most important compounds.
A loose body is a free fragment of cartilage or bone inside a joint, causing pain and restricted movement. Learn about causes, symptoms, and treatment options.
Loperamide is an antidiarrheal medication that slows intestinal movement and normalizes stool consistency. It is widely available over the counter and commonly used for acute diarrhea.
Loratadine is a second-generation antihistamine used to relieve allergy symptoms such as hay fever, hives, and allergic rhinitis. It is non-drowsy and available over the counter.
Lorazepam is a sedative and anxiolytic medication belonging to the benzodiazepine class. It is used to treat anxiety disorders, insomnia, and seizures.
Lordosis refers to the natural or abnormal inward curvature of the spine, primarily in the neck and lower back. Excessive lordosis can cause pain and mobility issues.
Lorlatinib is a targeted cancer drug used to treat ALK- or ROS1-positive non-small cell lung cancer. It inhibits mutated kinases and effectively crosses the blood-brain barrier.
Losartan is a blood pressure-lowering medication belonging to the class of AT1 receptor blockers. It is used to treat high blood pressure, heart failure, and to protect the kidneys in patients with diabetes.
Loss of elasticity refers to the reduced ability of tissues to return to their original shape after stretching or pressure. It can affect the skin, blood vessels, lungs, and other organs.
Lovastatin is a cholesterol-lowering medication belonging to the statin drug class. It is used to treat elevated blood lipid levels and to reduce the risk of cardiovascular disease.
Low birth weight refers to a birth weight below the 10th percentile for gestational age, indicating insufficient nutrient and oxygen supply to the unborn child.
Low blood pressure (hypotension) occurs when blood pressure falls below 90/60 mmHg. It can cause dizziness, fatigue, and fainting in affected individuals.
Low blood pressure (hypotension) causes symptoms like dizziness, fatigue, and fainting. Learn which signs to watch for and when to seek medical advice.
Low blood pressure (hypotension) can cause dizziness and fatigue. Learn what you can do to raise your blood pressure naturally and when to see a doctor.
Low ferritin indicates depleted iron stores in the body and may cause fatigue and iron deficiency. Learn about causes, symptoms, and treatment options.
Low-density lipoprotein (LDL) is a transport molecule in the blood that carries cholesterol to body cells. Elevated LDL levels are a major risk factor for cardiovascular disease.
Low T3 syndrome is a condition in which levels of the active thyroid hormone triiodothyronine (T3) are reduced in the blood, typically without a primary thyroid disease being present.
Lowering elevated cortisol levels is essential for overall health and well-being. Learn how nutrition, exercise, and stress management can help reduce cortisol naturally.
High blood pressure (hypertension) is one of the most common widespread diseases and a significant risk factor for cardiovascular diseases such as strokes and heart attacks.
The lower leg is the section of the leg between the knee joint and the ankle joint. It consists of two bones, muscles, blood vessels, and nerves essential for movement and weight-bearing.
The lower leg muscles include all muscles between the knee and the ankle joint. They enable foot and toe movement and are essential for walking, stability, and posture.
Lowering blood sugar refers to measures that reduce elevated glucose levels in the blood. This is especially important in diabetes mellitus to prevent long-term complications.
Lowering homocysteine protects the heart and blood vessels. Learn what causes elevated homocysteine levels, the associated health risks, and how to reduce them through diet and targeted nutrients.
Lowering intraocular pressure is key to preventing and treating glaucoma. Learn which methods effectively and safely reduce eye pressure to protect your vision.
The Lown classification is a medical grading system used in cardiology to assess ventricular arrhythmias based on their frequency and potential risk to the patient.
Lumbalgia refers to pain in the lower back region (lumbar spine). It is one of the most common medical complaints and can occur in acute or chronic form.
Lumbalisation is a congenital spinal variant in which the first sacral vertebra (S1) takes on the form of a lumbar vertebra, resulting in six instead of five lumbar vertebrae.
Lumbar disc herniation occurs when the soft inner core of a spinal disc in the lower back pushes through its outer layer, irritating nearby nerves. Common symptoms include lower back pain and leg pain.
Lumbar spine problems refer to conditions affecting the lower back and are among the most common health complaints worldwide. Causes range from muscle strain to herniated discs and degenerative changes.
Lumboischialgia describes lower back pain that radiates into the leg along the sciatic nerve. It is often caused by a herniated disc or spinal stenosis. Learn about symptoms, diagnosis, and treatment.
A lump on the neck is a palpable or visible swelling in the neck area. Causes range from harmless swollen lymph nodes to conditions that require medical evaluation.
A lunar eclipse occurs when Earth passes directly between the sun and the moon, causing the moon to move into Earth’s shadow. This rare event can only happen during a full moon.
A lung abscess is a localized pocket of pus within the lung tissue caused by a bacterial infection. It typically presents with fever, cough, and foul-smelling sputum.
Lung perfusion scintigraphy is a nuclear medicine imaging technique used to assess blood flow through the lungs. It is primarily performed to diagnose pulmonary embolism.
Lung scintigraphy is a nuclear medicine imaging technique used to assess blood flow and air distribution in the lungs. It is primarily used to diagnose pulmonary embolism.
Lung ventilation scintigraphy is a nuclear medicine imaging test that visualises airflow distribution in the lungs, commonly used to diagnose pulmonary embolism and other lung conditions.
Die Lungenembolie ist ein akuter Gefäßverschluss in der Lunge und kann lebensbedrohlich sein. Erfahre hier mehr über Ursachen, Symptome, Risikofaktoren, Diagnose und moderne Therapiemöglichkeiten.
Lupin protein is a plant-based protein derived from lupin seeds with a high nutritional value. It is considered a valuable alternative to animal proteins and is well-suited for vegan diets.
Lupus (medizinisch: Systemischer Lupus erythematodes, kurz SLE) ist eine chronisch-entzündliche Autoimmunerkrankung, bei der das Immunsystem körpereigene Zellen und Gewebe angreift.
Lupus erythematosus is a chronic autoimmune disease in which the immune system attacks the body's own tissues, affecting the skin, joints, kidneys, and other organs.
Lyme disease, also known as Lyme borreliosis, is an infectious disease caused by bacteria of the genus Borrelia, which is mainly transmitted by tick bites.
Antibiotics are the standard treatment for Lyme disease. Depending on the stage and severity, different antibiotic agents are used for effective therapy.
A Lyme disease blood test detects antibodies against Borrelia bacteria in the blood. It is used after a tick bite or when typical symptoms of Lyme disease are present.
Is Lyme disease contagious? Lyme borreliosis is transmitted through tick bites and is not contagious from person to person. Learn how infection occurs and how to protect yourself.
Lyme disease joint pain is caused by a Borrelia bacterial infection transmitted through tick bites. Lyme arthritis is one of the most common late-stage complications of Lyme disease.
Lyme disease late effects are long-term complications following a Borrelia infection. They can affect the joints, nervous system, and heart, appearing weeks to years after the initial infection.
Lyme disease symptoms include skin changes, joint pain, and neurological complaints. Early recognition is key to successful treatment and preventing complications.
The Lyme disease test is a blood test used to diagnose Lyme borreliosis, a tick-borne infectious disease. It detects antibodies against Borrelia bacteria in the blood.
Lyme disease therapy involves antibiotic treatment of the tick-borne infection caused by Borrelia bacteria. Early treatment leads to full recovery in most cases.
A lymph node biopsy is a diagnostic procedure in which tissue is removed from a lymph node and examined in a laboratory. It helps detect conditions such as lymphoma or cancer metastases.
Lymphadenitis colli is an inflammation of the cervical lymph nodes, most commonly caused by infections. It presents with swelling and pain in the neck area.
Lymphangitis is an inflammation of the lymphatic vessels, most commonly caused by bacterial infections. It typically presents as red streaks on the skin spreading from the site of infection.
A lymphatic circulation disorder is a condition in which the normal flow of lymph fluid through the body is impaired, leading to swelling, inflammation, and other complications.
Die manuelle Lymphdrainage ist eine spezielle Form der physikalischen Therapie, bei der durch sanfte, rhythmische Massagegriffe der Abfluss von Lymphflüssigkeit im Gewebe gefördert wird.
The lymphatic ring is a circular arrangement of lymphoid tissue in the throat that serves as one of the body´s first lines of defense against pathogens.
Lymphdrüsen, medizinisch korrekt Lymphknoten, sind kleine bohnenförmige Organe des Immunsystems, die entlang der Lymphgefäße im gesamten Körper verteilt sind.
Die Lymphe ist eine klare bis milchige Körperflüssigkeit, die durch das Lymphgefäßsystem zirkuliert und eine zentrale Rolle in der Immunabwehr, Gewebereinigung und dem Flüssigkeitshaushalt spielt.
Lymphocyte activation markers are surface molecules on immune cells that indicate whether lymphocytes have been activated by an antigen. They are essential tools in the diagnosis of immune disorders.
Lymphocyte function describes the roles of lymphocytes in the immune system: recognizing pathogens, producing antibodies, and protecting the body against infections and disease.
The lymphocyte migration study is a diagnostic laboratory test that examines the migratory behavior of lymphocytes to identify immune reactions to specific substances.
Immune cell proliferation refers to the targeted multiplication of immune cells in the body in response to infections, vaccinations, or other immunological stimuli.
Lymphocyte subtypes are specialized subgroups of white blood cells that play a central role in the immune system. They are distinguished by their surface markers and immunological functions.
Lymphocyte subtyping is a laboratory test used to identify and quantify different subgroups of lymphocytes in the blood, helping to diagnose and monitor immune system disorders.
Lymphocyte typing is a laboratory method used to identify and quantify different immune cell subsets in the blood. It supports the diagnosis of immune system disorders.
Absolute lymphocyte count refers to the exact number of lymphocytes per microliter of blood. It is a key part of the blood count and provides important information about immune system function.
Lymphopoiesis is the process by which lymphocytes are produced and matured in the bone marrow and lymphatic organs. It is a key process of the immune system.
Lysine is an essential amino acid that the body cannot produce on its own and must obtain through diet. It plays a key role in protein synthesis, collagen formation, and immune function.
The lysogenic cycle is a replication strategy of bacteriophages in which viral DNA integrates into the bacterial genome without immediately destroying the host cell.
Lysophospholipids are bioactive lipid molecules derived from phospholipids that play key roles in cell membrane structure, cell signaling, and digestion.
Lysosomes are small cellular organelles that act as the digestive center of the cell. They break down waste materials, foreign substances, and damaged structures using specialized enzymes.
Lysozyme is a naturally occurring enzyme that is found in many body fluids such as saliva, tear fluid, nasal secretions and breast milk, as well as in protein.
Mycotoxins are toxic secondary metabolites produced by mold fungi that can contaminate food and feed, posing serious health risks to humans and animals worldwide.
Phthalates are synthetic chemical compounds widely used as plasticizers in plastics. They are considered endocrine disruptors and may pose risks to human health, particularly in vulnerable populations.
Magnesiumcarbonat ist eine anorganische Magnesiumverbindung mit säure-neutralisierender (antazidischer) Wirkung. Erfahre mehr über Vorteile, Einsatzgebiete und Unterschiede zu besser resorbierbaren Magnesiumformen.