Protein – Functions, Daily Needs & Food Sources
Learn about protein: essential for muscles, metabolism, and health. Discover daily requirements and best animal and plant-based sources.
Things worth knowing about "Protein"
Protein is an essential macronutrient made up of amino acids.
Protein is a vital building block for cells, muscles, hormones and enzymes. Without it, processes such as growth, tissue repair and metabolism would not function properly in the human body.
Protein-rich foods include meat, fish, eggs, dairy products, legumes, nuts, and certain grains. The quality of protein depends on its content of essential amino acids. By combining plant and animal protein sources, a high biological value can be achieved.
The daily protein requirement for adults is about 0.8 g per kilogram of body weight, but higher amounts are recommended for athletes, pregnant women, and the elderly. Protein deficiency may cause muscle weakness, immune impairment, and delayed wound healing, while sufficient intake supports vitality and metabolic health.
Key Facts about Protein
- Fundamental building block for cells, muscles, enzymes, and hormones
- Sources: animal and plant-based foods, ideally combined
- Requirement: ~0.8 g/kg body weight, higher for athletes and pregnancy