The Institute of Medicine reports that no adverse effects have been associated with excess vitamin B12 intake from food and supplements in healthy individuals. However, if youre not deficient in vitamin B12 to begin with or you dont address the underlying reasons you might be deficient, i.e
What are the Symptoms of a Vitamin B12 Deficiency
Some individuals may struggle to absorb enough B12 from their diet, especially those with conditions like pernicious anemia, certain gastrointestinal disorders, or those taking medications that impact absorption
Demyelination of brain cells is commonly seen in dementia patients
Vitamin B12 deficiency is most common in adults over 50, vegans and vegetarians, pregnant women, and those with chronic health conditions like Crohns disease, inflammatory bowel disease (IBS), or rheumatoid arthritis