Vitamin B1 (thiamine)
Alcoholism, anemia, depression, diarrhea, mental illness, stress, beriberi, shingles, infections.
Thiamine deficiencies have been linked to mental illness. Geriatric patients who have surgery may experience a thiamine loss which may explain their postoperative confusion and mental deterioration. Antibiotics, oral contraceptives and sulfa drugs may also decrease thiamine levels. Eating a diet high in carbohydrates increases the need for thiamine.
Stress, caffeine, surgery, excess carbohydrate consumption (sugar), tobacco, raw fish and shellfish, antibiotics, oral contraceptives, sulfa drugs, muscle relaxants.
Sunflower seeds, soybeans, brown rice, whole wheat, peanuts.
Adequate supplies of magnesium must be present in order for thiamine to convert to forms the body can use. In addition, a full array of the other B-vitamins must also be supplied in order for all of them to be utilized correctly.
Thiamine hydrochloride is the most common source of this vitamin in nutritional supplements.