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[2] Risk factors may occur possibly more in elderly people due to impaired intestinal absorption, and in children, premenopausal women, and pregnant women, whose diets are low in animal foods

Rebound hunger occurs with appetite-suppressing medications when the brains hunger-regulating neurons, which have been pharmacologically suppressed, suddenly regain activity upon drug cessation

Yes, there can be side effects, although they are typically mild for most people

If you regularly work out and do strength training, B12 injections might be key to enhancing your strength

If symptoms worsen or new ones appear, re-evaluate (e.g., neurological exam, additional testing)