Vitamin B1

Supplement Forms/Alternate Names :

  • Thiamin

Uses

Principal Proposed Uses

Other Proposed Uses

Vitamin B1, also called thiamin, was the first B vitamin discovered. Every cell in your body needs thiamin to make adenosine triphosphate, or ATP, the body's main energy-carrying molecule. The heart, in particular, has considerable need for thiamin in order to keep up its constant work. Severe deficiency of thiamin results in beriberi, a disease common in the 19th century, but rare today. Many of the principal symptoms of beriberi involve impaired heart function.

Requirements/Sources

Your need for vitamin B 1 varies with age. The official US and Canadian recommendations for daily intake are as follows:
  • Infants
    • 0-6 months: 0.2 mg
    • 7-12 months: 0.3 mg
  • Children
    • 1-3 years: 0.5 mg
    • 4-8 years: 0.6 mg
    • 9-13 years: 0.9 mg
  • Males
    • 14 years and older: 1.2 mg
  • Females
    • 14-18 years: 1.0 mg
    • 19 years and older: 1.1 mg 
  • Pregnant or Nursing Women : 1.4 mg
Although vitamin B 1 deficiency is rare in the developed world, it may occur in certain medical conditions, such as alcoholism , anorexia , Crohn's disease , and folate deficiency. People undergoing kidney dialysis or taking loop diuretics may also become deficient in vitamin B 1 . Certain foods may impair your body's absorption of B 1 as well, including fish, shrimp, clams, mussels, and the herb horsetail . Brewer's and nutritional yeast are the richest sources of B 1 . Peas, beans, nuts, seeds, and whole grains also provide fairly good amounts.

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