Injections are particularly appropriate for those with: Pernicious anaemia, an autoimmune condition affecting B12 absorption Conditions affecting the stomach or small intestine, such as Crohns disease or coeliac disease Those who have had gastric surgery or bariatric procedures Strict vegans and vegetarians not meeting their B12 needs through food or oral supplements For those who can absorb B12 normally, oral supplements are generally an effective and well-evidenced alternative to injections
Only specialized labs can detect peptide fragments or growth-factor activity, typically in sports testing, clinical trials, or targeted research
But the scale of this shift is staggering
Experts say the results are promising, but more research is needed.
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