Atherosclerosis Risk: Causes, Symptoms and Prevention
Atherosclerosis risk refers to the likelihood of developing a hardening and narrowing of the arteries. Key risk factors include high blood pressure, smoking, and elevated cholesterol levels.
Things worth knowing about "Atherosclerosis Risk"
Atherosclerosis risk refers to the likelihood of developing a hardening and narrowing of the arteries. Key risk factors include high blood pressure, smoking, and elevated cholesterol levels.
What is Atherosclerosis Risk?
Atherosclerosis risk describes an individual person´s likelihood of developing atherosclerosis, a condition in which fatty deposits, cholesterol, calcium, and other substances build up inside the walls of the arteries. These deposits, known as plaques, narrow the arteries, reduce blood flow, and can lead to life-threatening events such as heart attack or stroke.
Risk Factors
Atherosclerosis risk is influenced by a variety of factors, which are broadly divided into non-modifiable and modifiable risk factors.
Non-Modifiable Risk Factors
- Age: Risk increases significantly with advancing age.
- Sex: Men tend to develop atherosclerosis earlier than women.
- Family history: A genetic predisposition substantially raises the risk.
Modifiable Risk Factors
- High blood pressure (hypertension): Persistently elevated blood pressure damages arterial walls.
- Elevated cholesterol (hypercholesterolaemia): High LDL cholesterol levels in particular promote plaque formation.
- Smoking: Damages blood vessel walls and promotes inflammatory processes.
- Diabetes mellitus: Chronically elevated blood sugar levels damage blood vessels over time.
- Overweight and obesity: Contribute to other risk factors such as hypertension and diabetes.
- Physical inactivity: A sedentary lifestyle increases cardiovascular risk.
- Unhealthy diet: Diets high in saturated fats and sugar accelerate plaque buildup.
- Chronic stress: Can raise blood pressure and inflammatory markers.
Symptoms and Complications
Atherosclerosis usually develops silently over decades without noticeable symptoms. Symptoms typically appear only when arteries become significantly narrowed or blocked. Possible complications include:
- Coronary artery disease (CAD) with chest pain (angina pectoris) or heart attack
- Stroke due to impaired blood flow to the brain
- Peripheral artery disease (PAD) causing leg pain during walking
- Renal artery stenosis leading to high blood pressure and reduced kidney function
Diagnosis
Several diagnostic methods are available to assess an individual´s atherosclerosis risk:
- Blood tests: Measurement of cholesterol, blood glucose, inflammatory markers (e.g., CRP), and other values
- Blood pressure measurement: Detection of hypertension
- ECG and stress ECG: Assessment of cardiac function
- Ultrasound (Doppler sonography): Visualisation of vascular changes, e.g., in the carotid arteries
- Ankle-brachial index (ABI): A simple test to detect peripheral artery disease
- Risk scores: Calculators such as SCORE2 (ESC) estimate the 10-year risk of cardiovascular events.
Prevention and Treatment
The encouraging news is that atherosclerosis risk can be significantly reduced through a healthy lifestyle and medical interventions.
Lifestyle Changes
- Quitting smoking
- Heart-healthy diet (e.g., Mediterranean-style diet)
- Regular physical activity (at least 150 minutes of moderate exercise per week)
- Weight management
- Stress reduction
Medical Treatment
- Statins: Lower LDL cholesterol levels and help stabilise plaques
- Antihypertensives: Medications to reduce blood pressure
- Antidiabetic agents: Blood sugar management in diabetes
- Antiplatelet agents: Prevent blood clotting on plaques (e.g., acetylsalicylic acid)
References
- Libby, P. et al. – Atherosclerosis. Nature Reviews Disease Primers, 2019. Available at: https://www.nature.com/articles/s41572-019-0106-z
- European Society of Cardiology (ESC) – Guidelines on Cardiovascular Disease Prevention. European Heart Journal, 2021.
- World Health Organization (WHO) – Cardiovascular diseases (CVDs) Fact Sheet. Geneva, 2023. Available at: https://www.who.int/news-room/fact-sheets/detail/cardiovascular-diseases-(cvds)
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