Which nutrient is primarily responsible for building and repairing body tissues?

Protein is primarily responsible for building and repairing body tissues. This macronutrient is made up of amino acids, which are the building blocks of muscle, skin, organs, and various other tissues in the body. When you consume protein, your body breaks it down into these amino acids, which can then be utilized for the synthesis of new tissues, as well as the repair of damaged ones.

Proteins play a crucial role not only in growth and maintenance but also in producing enzymes, hormones, and other essential body chemicals. This function underscores the importance of including sufficient protein in the diet to support tissue health and overall bodily functions.

While carbohydrates and fats provide energy and are important for other bodily functions, they do not serve the primary role of repairing and building tissues like protein does. Vitamins are crucial for various metabolic processes and support overall health but do not directly contribute to the structural integrity of body tissues in the way that proteins do.