b12 injection side effects reddit Vitamin and Safety Side Effects of Vitamin B12

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In the years immediately following the IOMs 1998 report setting the current RDA, research associated an abnormally high level of homocysteine, a molecule involved in protein metabolism, with an increased risk of cardiovascular disease, mortality, and cognitive impairment

Certain populations face higher deficiency risk: vegetarians and vegans (B12 is primarily found in animal products), adults over 50 (decreased stomach acid reduces B12 absorption), individuals with digestive disorders like Crohn's disease or celiac disease, and those taking medications like metformin or proton pump inhibitors

Boosts energy levels Probably one of the most well-known reasons individuals request b12 shots for energy is due to chronic fatigue