More on this: Vegan and vegetarian sources of B12 To diagnose a vitamin B12 deficiency, doctors A doctor may order blood tests if they suspect a person has a vitamin B12 deficiency, including a complete blood count and tests to check levels of B12 and folate in the blood
Are there side effects from B12 injections
This is especially important for people on highly restrictive eating plans, older adults, vegetarians, vegans, or those with certain digestive or absorption issues
People over 60, strict vegans, and those on long-term acid-suppressing drugs may be higher risk
Never discontinue B12 injections without medical advice, even if you feel completely well, as deficiency can recur and cause irreversible neurological damage if left untreated
bloody stools