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Nutrition (also
called nourishment or
aliment) is the provision, to
cells and organisms, of the materials necessary (in the
form of food) to support life. Many common health problems can be
prevented or alleviated with a healthy
diet.
The diet of an organism is what it eats, and
is largely determined by the perceived palatability of foods.
Dietitians are health
professionals who specialize in human nutrition, meal
planning, economics, and preparation. They are trained to provide safe, evidence-based dietary advice and
management to individuals (in health and disease), as well as to institutions.
A poor diet can have an injurious impact on health, causing
deficiency diseases such as scurvy, beriberi, and
kwashiorkor; health-threatening conditions like obesity and metabolic syndrome,
and such common chronic systemic diseases as cardiovascular disease, diabetes.
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