BERIBERI. Beriberi is a disease that usually begins with a loss of feeling in the feet and then weakness and pain in walking. In many, but not all, cases the body then becomes swollen and in the most serious cases the heart begins to fail, and the patient becomes breathless and soon dies. The problem stems from an insufficient intake of the vitamin thiamin (or "thiamine") even though we require each day only about 1 milligram, which is equivalent to one 32,000th of an ounce. The word "beriberi" comes from Indonesia and may mean "weak" or "swelling," but there have been many other suggested meanings.

The disease used to be a serious problem in Far Eastern countries where white rice was the staple food and people ate only small quantities of supplementary foods. Husked rice grains provide a reasonable amount of this vitamin, but further processing, or "polishing" to rub off the bran and germ, removes most of the remaining...