Which nutrient is primarily responsible for repairing tissues in the body?

Proteins are the nutrients primarily responsible for repairing tissues in the body. They are made up of amino acids, which are the building blocks of body tissues. When the body experiences injury or stress, protein synthesis increases to produce new cells and repair damaged ones. Additionally, proteins play a critical role in the formation of enzymes and hormones that are essential for various bodily functions.

Carbohydrates serve primarily as a source of energy for the body and are not directly involved in tissue repair. Fats, while important for energy storage and insulation, do not have a primary role in repairing tissues. Vitamins, on the other hand, support various biochemical processes and can aid in the healing process, but they are not the main nutrients responsible for the physical repair of tissues. Thus, proteins stand out as the key nutrients for tissue repair.