Recovery is the process of returning to health after illness or injury, and nutrition plays a central supporting role in it. The body repairing tissue needs extra protein for rebuilding, energy to fuel healing, and micronutrients such as vitamin C, zinc, and iron for collagen formation, immune function, and blood building. After surgery or serious infection, appetite often falls just when needs rise, so small, frequent, nutrient-dense meals and, where needed, oral nutritional supplements bridge the gap. Dehydration and muscle wasting are the common setbacks, countered by fluids and early movement with adequate protein. Clinicians track recovery through wound healing, strength, and weight regain, adjusting feeding plans until the patient is back to full function and normal eating.