does vitamin b12 injections cause weight gain gain? Who Offers Vitamin B12 for

The 2026 Sports Medicine and JAAOS Global Research and Reviews papers (PMID 41966639, PMID 41490200) place multiple compounds including this one into the wider research context of unapproved compounds under active investigation, with attention to both the mechanism findings and the regulatory framing that researchers consulting these reviews should weigh equally

Those who follow a vegetarian or vegan diet may be at risk for B12 deficiency, as this vitamin is primarily found in animal products

More binding protein means more B12 is held in the blood, pushing serum levels up

[3] : 313 The most common cause in developed countries is impaired absorption due to loss of gastric intrinsic factor (IF), required for absorption