All About Thiamine (B1) and Thiamine Deficiency
Since fatigue is such a vague symptom with numerous possible causes, it can be commonly overlooked as a sign of thiamine deficiency. However, considering the vital role thiamine plays in converting food into fuel, it's no surprise that fatigue and lack of energy is a common symptom of deficiency.Thiamin (or thiamine) is one of the water-soluble B vitamins. It is also known as vitamin B1. Thiamin is naturally present in some foods, added to some food products, and available as a dietary supplement.