Send us Fan Mail Could Burning Feet Be Due to Thiamine Deficiency The importance of B vitamins, specifically thiamine (B1) is the focus of this episode. Thiamine plays a crucial role in converting food into energy and is involved in various bodily functions. Thiamine deficiency can lead to cardiovascular, muscular, gastrointestinal, and nerve system issues, as well as cataracts and neuropathy. Chronic alcohol consumers, diabetics, and patients with congestive heart failure or on hemodialysis ...