Cold hands and feet may be more than a seasonal inconvenience.
Doctor says cold hands and feet may signal low levels of vitamin B12
A doctor has suggested that persistently cold extremities could be a sign the body is lacking vitamin B12, an essential nutrient needed for healthy blood and nerve function.
Eric Berg, who shares health advice online, highlighted the potential link in a viral TikTok video.
He said: “Cold hands and feet is a B12 deficiency”.
Vitamin B12, also known as cobalamin, is a water-soluble vitamin that plays a key role in producing red blood cells and maintaining the nervous system. According to the National Institutes of Health, the nutrient helps prevent anaemia by supporting the formation of healthy red blood cells that carry oxygen throughout the body.
Without enough B12, the body can struggle to produce sufficient red blood cells. Health resource Healthline explains that reduced red blood cell production can limit oxygen delivery to tissues, which may lead to symptoms including cold hands and feet.
Vitamin B12 occurs naturally in foods such as meat, fish, dairy products and eggs. The National Health Service says people who follow vegetarian or vegan diets may face a higher risk of deficiency because most plant foods do not naturally contain the vitamin unless they are fortified.
Fortified cereals and nutritional yeast are among the foods that can help supply B12 in plant-based diets. The British Dietetic Association notes that some adults may need fortified foods or supplements to meet their daily requirements.
Low B12 levels can also affect the nervous system. The Cleveland Clinic says symptoms may include numbness, tingling, balance problems and changes in mood or memory.
However, experts caution that cold hands and feet can have several causes. The National Health Service says the symptom may also be linked to poor circulation, anaemia, thyroid problems or Raynaud's phenomenon.
Doctors advise that people experiencing persistent cold extremities alongside fatigue, tingling or weakness should consult a GP, as simple blood tests can check vitamin B12 levels and guide treatment if needed.