A thiamine deficiency means an individual has low levels of vitamin B1 (thiamine) in their body. Thiamine is an essential ...

GI symptoms, including nausea and diarrhea. Having low levels of B12 can cause fewer red blood cells to reach your digestive ...

Magnesium deficiency may be underdiagnosed since the signs commonly don’t appear until levels become severely low. A 2023 systematic review of randomized clinical trials indicates an association ...