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[1] For bariatric surgery patients, it's important to follow the specific protocols recommended by your surgical team, as many UK centres recommend routine intramuscular B12 after certain procedures such as Roux-en-Y gastric bypass

Last updated on May 10, 2026

This modification can regulate gene expression by altering the interaction between the DNA and the proteins that bind to it 12,13

If youre unable to absorb B12 properly, injections may be necessary

This approach trades some convenience for improved accuracy in microgram-range dosing

Its confidence interval spans zero and is wider than the point estimate, so it was too small to detect the difference it observed uninformative rather than null