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[17] While it technically refers to anemia caused specifically by autoimmune deficiency of intrinsic factor, it is commonly used to refer to B 12 -deficient anemia as a whole, regardless of cause
For a broader overview of the regulatory landscape, see our are research peptides legal in 2026 explainer
Retatrutide is not currently available as a licensed treatment in the UK and may only be accessed through approved clinical trial settings
Strict vegans and vegetarians are also at higher risk for deficiency since B12 occurs naturally only in animal-derived foods
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