Vitamin B-12 - Mayo Clinic People with very low vitamin B-12 levels can have symptoms such as fatigue, muscle weakness, stomach problems, nerve damage, vision problems and mood changes They also may have low iron, called anemia, or low blood counts
Signs and Symptoms of Vitamin B12 Deficiency - Healthline What happens when your vitamin B12 is low? Read on about nine of the most commonly reported symptoms related to B12 deficiency and how this deficiency is diagnosed and treated
What Happens to Your Body When You Are Low on Vitamin B12 Signs of a vitamin B12 deficiency include anemia, neuropathy, and more Vitamin B12 deficiency can cause symptoms of other conditions, making diagnosis difficult Most cases are due to low dietary intake or poor B12 absorption Treatment usually involves vitamin B12 supplements
Vitamin B12 Deficiency - Harvard Health Vitamin B12 is available only in animal foods (meat and dairy products) or yeast extracts (such as brewer's yeast) Vitamin B12 deficiency is defined by low levels of stored B12 in the body that can result in anemia, a lower-than-normal number of red blood cells
Vitamin B12 Deficiency Anemia - Johns Hopkins Medicine Vitamin B12 deficiency anemia is a condition in which your body does not have enough healthy red blood cells, due to a lack (deficiency) of vitamin B12 This vitamin is needed to make red blood cells, which carry oxygen to all parts of your body