Vitamin B7 (biotin) deficiencies may cause symptoms like hair loss ... those who are breastfeeding require more vitamin B9 ...

Other possible symptoms of a vitamin B12 or B9 deficiency include: mouth ulcers a sore, red tongue depression memory problems problems with understanding and judgment To treat a vitamin B12 or B9 ...

Vitamin M is also known as vitamin B9, folic acid ... can lead to folate deficiency. This may result in a type of anemia in which low numbers of red blood cells occur. Symptoms may include feeling ...

If you're dealing with a B12 deficiency or simply struggling to get enough of the essential vitamin in your diet, B12 supplements can help. These are the benefits and potential risks to know.