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From the 1950s to the 1980s, cerebellar stimulation gained more attention (albeit controversial) for its use in the treatment of disease [156, 394,395,396]

Vegetarians or vegans If your diet doesnt consist of the proper amounts of meat, fish and eggs Over age 50 Pregnant or breastfeeding Cigarette smokers If you take medications for heartburn or take potassium supplements If youve had part of your stomach surgically removed or banded / VITAMIN B12 DEFICIENCY AND CHRONIC FATIGUE SYNDROME Why is a lack of B12 of such concern

The exact dose depends on the patients B12 levels, any health issues, and how well they respond to treatment

FDA does not pre-approve dietary supplements before they are sold

Curr Opin Neurobiol

Vitamin B-12 injections are generally considered to be very safe