A healthy diet consists of a variety of nutrients, the substances within food that nourish the body. A healthy diet helps people maintain a desirable body weight and body composition (the percentage of fat and muscle in the body) and to do their daily physical and mental activities. If people do not consume enough nutrients, a nutritional deficiency can result. If people consume too much food, obesity can result.
Disorders of Nutrition
- Overview of Nutrition
- Carbohydrates, Proteins, and Fats
- Vitamins and Minerals
- Food Additives and Contaminants
- Nutritional Requirements
- Overview of Minerals
- Overview of Nutritional Support
- Tube Feeding
- Intravenous Feeding
- Nutritional Support for People Who Are Dying or Severely Demented
- Bariatric Surgery
- Metabolic Syndrome
- Overview of Vitamins
- Vitamin A
- Vitamin B 6
- Vitamin B 12
- Vitamin C
- Vitamin D
- Vitamin E
- Vitamin K
Disorders of Nutrition Sections (A-Z)
Many undernourished people (see Undernutrition) need additional nutrition (nutritional support). Artificial feeding, which uses commercial nutrient mixtures rather than food, is a common form of nutritional support. Nutritional support is intended to increase the amount of muscle tissue (muscle mass). It usually provides calories as well as vitamins and minerals.
Obesity and the Metabolic Syndrome
Overview of Nutrition
Vitamins are a vital part of a healthy diet. The recommended dietary allowance (RDA)—the amount most healthy people need each day to remain healthy—has been determined for most vitamins. A safe upper limit (tolerable upper intake level) has been determined for some vitamins. Intake above this limit increases the risk of a harmful effect (toxicity).
Also of Interest
Which of the following is a regular and natural cause for the loss of iron from the human body that may lead to iron deficiency?
A MEDICAL EDUCATION BLOG
The Merck Manual
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