Nutrition, nourishment, or aliment, is the supply of materials - food - required by organisms and cells to stay alive. In science and human medicine, nutrition is the science or practice of consuming and utilizing foods.
Nutrition is present in all processes of life. Right from the very moment from the fetal development in the uterus, to the birth, human growth, maturity, old age, and eventual death. Even after death the human body serves as nutrition for other organisms. Anything that involves life and chemical or biochemical movement has nutrition at its core.
Anything that lives is dependent on energy, which results from the combustion of food.
Food provides the energy and nutrients you need to be healthy. Nutrients include proteins, carbhohydrates, fats, vitamins, minerals and water.
Healthy eating is not hard. The key is to
- Eat a variety of foods, including vegetables, fruits, and whole-grain products
- Eat lean meats, poultry, fish, beans, and low-fat dairy products
- Drink lots of water
- Limit salt, sugar, alcohol, saturated fat, and trans fat in your diet