Persistently cold hands and feet could be a sign of vitamin B12 deficiency, according to a doctor. Eric Berg, who shares health advice online, highlighted the potential link in a viral TikTok video.
Vitamin B12, also known as cobalamin, is essential for producing red blood cells and maintaining the nervous system. The National Institutes of Health notes that the nutrient helps prevent anaemia by supporting healthy red blood cell formation. Without enough B12, the body may struggle to produce sufficient red blood cells, limiting oxygen delivery to tissues and potentially causing cold extremities, as explained by Healthline.
B12 occurs naturally in meat, fish, dairy products and eggs. The NHS says vegetarians and vegans face a higher risk of deficiency because most plant foods lack the vitamin unless fortified. Fortified cereals and nutritional yeast can help supply B12 in plant-based diets, while the British Dietetic Association notes some adults may need supplements.
Low B12 levels can also affect the nervous system, with symptoms including numbness, tingling, balance problems and mood changes, according to the Cleveland Clinic. However, experts caution that cold hands and feet can have several causes, such as poor circulation, anaemia, thyroid problems or Raynaud's phenomenon. Doctors advise consulting a GP if symptoms persist, as blood tests can check B12 levels and guide treatment.
