Thiamine

Thiamine, or vitamin B1, is a member of the water-soluble family of B complex vitamins. Thiamine helps the body cells convert carbohydrates into energy. It is also essential for the functioning of the heart, muscles, and nervous system. Thiamine is found in fortified breads, cereals, pasta, whole grains (especially wheat germ), lean meats (especially pork), fish, dried beans, peas, and soybeans.

A deficiency of thiamine can cause weakness, fatigue, psychosis, and nerve damage. Thiamine deficiency is most often seen in those who abuse alcohol (alcoholism). A lot of alcohol makes it hard for the body to absorb thiamine from foods. Unless those with alcoholism receive higher-than-normal amounts of thiamine to make up for the difference, the body will not get enough of the substance. This can lead to a disease called beriberi. In severe thiamine deficiency, brain damage can occur. One type is called Korsakoff syndrome.