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Vitamin B1 (thiamine) is essential for energy metabolism, converting carbohydrates into ATP through the pyruvate dehydrogenase complex. It is critical for nervous system function and heart health. Deficiency causes beriberi and Wernicke encephalopathy, commonly seen in alcoholism, after bariatric surgery, and with chronic diuretic use.
Also known as: B1, Thiamin, Thiamine, Tiamina, Tiyamin, Vit B1, Vitamin B1, 비타민 B1
High B1 from supplementation is generally nontoxic. Low B1 (thiamine deficiency) causes beriberi and Wernicke encephalopathy, commonly seen in alcoholism, bariatric surgery patients, and chronic diuretic use.
Standard range is 70-180 nmol/L. Functional practitioners target above 100 nmol/L. B1 deficiency is underdiagnosed because routine testing is uncommon.