Nutrition

Nutrition

Nutrition is the study and practice of how food and drink provide the substances the body needs to function, grow, and stay healthy. It covers the major building blocks of the diet—proteins, fats, carbohydrates—as well as vitamins, minerals, fiber, and water, all of which play specific roles in energy, immunity, and repair. A balanced eating pattern helps maintain a healthy weight, supports mental focus, reduces the risk of chronic diseases like diabetes and heart disease, and aids recovery from illness. Good nutrition is not just about single foods or nutrients, but about overall eating habits, portion sizes, and variety over time. Different life stages, activity levels, health conditions, and cultural practices change what and how much a person needs, so practical guidance often needs to be personalized. Food choices are also shaped by availability, budget, skills, and preferences, which means realistic, sustainable changes work best. Simple habits—like including vegetables at meals, choosing whole grains, limiting highly processed foods, and staying hydrated—can make a big difference. Paying attention to nutrition helps people feel better day to day and reduces long-term health risks.