An increase in total fruit intake was associated with a change in weight of -0.53 lb (a weight loss of 0.24 kg), and an increase in total vegetable intake was associated with a weight change of -0.25 lb (a weight loss of 0.11 kg) - for each extra daily serving over a 4 years period.
133,468 US men and women were followed for up to 24 years. The benefits of increased consumption were strongest for berries, apples or pears, tofu (soy), cauliflower, and cruciferous and green leafy vegetables. Increased satiety with fewer calories could be partly responsible. Obesity is a primary risk factor for many life-shortening health conditions.
Undernutrition is a form of malnutrition. (Malnutrition also includes overnutrition).
Undernutrition can result from:
- inadequate ingestion of nutrients,
- impaired metabolism,
- loss of nutrients due to diarrhea,
- increased nutritional requirements.
Undernutrition progresses in stages: it may develop slowly when it is due to anorexia or very rapidly. First, nutrient levels in blood and tissues change, followed by intracellular changes in biochemical functions and structure. Ultimately, symptoms and signs appear. Diagnosis is by history, physical examination, body composition analysis, and sometimes laboratory tests.
Undernutrition from micronutrient deficiencies, or "hidden hunger", affects over 2 billion people globally and can lead to reduced growth and cognitive development, birth defects, blindness, and overall poor health. Vitamin A deficiency, iron deficiency anaemia and iodine deficiency disorders are among the most common forms of micronutrient malnutrition.