Nutrition is a critical factor for appropriate child and adolescent development. Appropriate nutrition changes according to age. Nutrition is an important element for prevention of disease development, especially for chronic diseases. Many children and adolescents live in environments that do not promote optimum nutrition. Families must work to provide improved food environments to encourage optimum nutrition. Early primordial prevention of risk factors for chronic disease, such as cardiovascular disease, is important, and dietary habits established early may be carried through adult life.