Diet (nutrition)

Source: Wikipedia, the free encyclopedia.
A selection of magnesium-containing food consumed by humans. The human diet can vary widely.

In nutrition, diet is the sum of food consumed by a person or other organism.[1] The word diet often implies the use of specific intake of

, each culture and each person holds some food preferences or some food taboos. This may be due to personal tastes or ethical reasons. Individual dietary choices may be more or less healthy.

Complete nutrition requires ingestion and absorption of

minerals, essential amino acids from protein and essential fatty acids from fat-containing food, also food energy in the form of carbohydrate, protein, and fat. Dietary habits and choices play a significant role in the quality of life, health and longevity


A healthy diet can improve and maintain health, which can include aspects of mental and physical health.[2] Specific diets, such as the DASH diet, can be used in treatment and management of chronic conditions.[2]

dietary reference values which provide information about the prevention of nutrient

Dietary choices

Raw food tacos prepared with guacamole, non-fried beans and sour cream.
Raw food tacos prepared with guacamole, non-fried beans and sour cream. Raw foodism promotes the consumption of food which has not been cooked.

Exclusionary diets are diets with certain groups or specific types of food avoided, either due to health considerations or by choice.[2] Many do not eat food from animal sources to varying degrees (e.g. flexitarianism, pescetarianism, vegetarianism, and veganism) for health reasons, issues surrounding morality, or to reduce their personal impact on the environment[3] (e.g. environmental vegetarianism). People on a balanced vegetarian or vegan diet can obtain adequate nutrition, but may need to specifically focus on consuming specific nutrients, such as protein, iron, calcium, zinc, and vitamin B12.[4][2][5] Raw foodism and intuitive eating are other approaches to dietary choices. Education, income, local availability, and mental health are all major factors for dietary choices.[2]

Weight management

Average dietary energy supply by region

A particular diet may be chosen to promote weight loss or weight gain. Changing a person's dietary intake, or "going on a diet", can change the energy balance, and increase or decrease the amount of fat stored by the body.


Eating disorders

An eating disorder is a mental disorder that interferes with normal food consumption. It is defined by abnormal eating habits, and thoughts about food that may involve eating much more or much less than needed.[11] Common eating disorders include anorexia nervosa, bulimia nervosa, and binge-eating disorder.[12] Eating disorders affect people of every gender, age, socioeconomic status, and body size.[12]

Environmental dietary choices