Aviles, A., & Helfrich, C
Front Immunol 12:711231
Eliminate food allergies, toxic chemicals, negative work environments, caffeine or alcohol intake, junk foods, and excessive white flour and sugar products
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[1] If you experience persistent or concerning symptoms after starting B12 supplements, particularly skin changes or gastrointestinal issues, it is advisable to discuss these with your GP rather than assuming they are directly caused by vitamin excess