WHY VITAMINS ARE VALUABLE
Vitamins are chemical substances present naturally in most foods and in
synthetic form, in vitamin pills. Both forms are equally nutritious since
the vitamins in each case are chemically identical. The body needs only
tiny quantities of them-ranging from about 30mg. (30 thousands of a gram) a day
of Vitamin C for instance down to 1 microgram (one millionth of a gram) of
vitamin B12. They play no direct part in protecting body tissues or
energy, but they are essential for the body to function efficiently, just as oil
is essential for the running of a car.
Vitamin deficiencies can lead to illness and in extreme cases, death. The
killer diseases scurvy and beri-beri are caused by deficiencies of the Vitamin C
and B1 respectively. Deficiency of Vitamin A can cause night blindness and
rickets (a childhood disease of the bones) is due to a deficiency of vitamin D
anyone who eats a variety of foods, however is very unlikely to run into
problems.
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