Healthier lives 47

 what is proteins

Proteins are essential macronutrients made up of chains of amino acids linked by peptide bonds. They are fundamental building blocks of body tissues such as muscles, skin, and organs, and they also play roles in various biological functions including enzyme production, hormone regulation, immune responses, and cellular communication. Proteins provide energy with about 4 calories per gram, similar to carbohydrates.

There are 20 amino acids that form proteins, nine of which are essential, meaning the body cannot synthesize them and they must be obtained through diet. Protein sources include animal foods like meat, fish, eggs, and dairy, which usually contain all essential amino acids (complete proteins), and plant-based foods such as beans, grains, nuts, and seeds, which may lack some essential amino acids but can be combined to provide a complete amino acid profile.

Proteins are vital for growth, repair, and maintenance of body tissues, making them crucial for overall health, muscle function, and recovery .

In summary:Proteins are large molecules made of amino acids.They serve as structural and functional components in the body.

Dietary protein is essential for muscle building, tissue repair, enzyme and hormone production.

Sources include both animal and plant foods.A balanced intake of proteins is necessary for health and bodily functions.

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