Lastly, taking supplemental doses of B12 higher than 100-150% of the RDA can trigger breakouts in acne-prone people.
doi:10.1007/s00125-007-0793-y
If we look at people undergoing a type of bariatric surgery that messes with B12 absorption, we start seeing problems within just a few months in terms of impaired metabolism, a rise in methylmalonic acid and homocysteine, two compounds that are normally cleared in part by B12
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Rheumatoid Arthritis: An autoimmune disease that causes inflammation in the elbow joint lining, leading to chronic pain and swelling
