Thiamine (vitamin B1) is a vitamin required for energy metabolism, including the metabolism of glucose. Thiamine deficiency can caused by a decreased dietary intake, decreased absorption, increased utilization or increased losses. A thiamine deficiency can initially cause vague symptoms, and then subsequently may lead to conditions like Wet and Dry Beriberi, Wernicke’s encephalopathy, and Korsakoff’s syndrome. In this lesson, we discuss the early symptoms of thiamine deficiency, including the signs and symptoms of the Beriberi conditions and Wernicke-Korsakoff syndrome. 

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