A water-soluble, crystalline compound of the B vitamin complex, essential for
normal metabolism and health of the cardiovascular and nervous systems. Thiamine
plays a key role in the metabolic breakdown of glucose to yield energy in body
tissues. Rich sources are pork; organ meats; green leafy vegetables; legumes;
sweet corn; egg yolk; cornmeal; brown rice; yeast; and the germ and husks of
grains, berries, and nuts. It is not stored in the body and must be supplied
daily. A deficiency of thiamine affects chiefly the nervous system, the
circulation, and the GI tract. Symptoms include irritability, emotional
disturbances, loss of appetite, multiple neuritis, increased pulse rate,
dyspnea, reduced intestinal motility, and heart irregularities. Severe
deficiency causes beriberi.
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