8 clinically reviewed articles, written and peer-reviewed by the HealthRX.com Medical Team.
Showing 8 of 8 clinical reviews.
A clinician-reviewed deep dive into how endurance and resistance training affect vitamin B12 status, what the optimal serum range is for athletes and active adults, and when to supplement.
A complete clinical guide to at-home and finger-prick vitamin B12 testing, covering normal vs. Optimal ranges, metformin depletion, neuropathy risk, and how to act on your results.
How to read your vitamin B12 lab result at every age, from your 20s through your 80s. Covers optimal ranges, deficiency thresholds, metformin depletion, neuropathy risk, and the latest longevity-medicine consensus with primary citations.
Standard lab reference ranges for vitamin B12 flag deficiency, not optimization. Learn what longevity-medicine practitioners target, why metformin depletes B12, and when to act on your result.
Metformin, PPIs, and several other common drugs deplete vitamin B12. Learn the normal range, optimal targets, depletion mechanisms, and evidence-based repletion protocols.
A clinician-reviewed deep dive into vitamin B12 reference ranges, optimal targets for longevity medicine, how estrogen, progesterone, testosterone, and the menstrual cycle shift B12 status, and what metformin and oral contraceptives do to your levels.
A physician-reviewed guide to vitamin B12 lab interpretation, covering normal vs. Optimal ranges, how fasting and nutrition affect results, metformin depletion, neuropathy risk, and longevity-medicine consensus.
Learn how to interpret vitamin B12 rate-of-change trends, optimal ranges, and clinical significance for neuropathy prevention, cognition, and metformin depletion monitoring.