Methylfolate and B12 for heart health: 15 trials and 71,422 people found no drop in heart attacks. What the evidence shows, and why folic acid still rules pregnancy.
vitamin b12
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Vitamin B12 for Energy: Why the Dose Is Over 2,000 Times the RDA
NIH research shows vitamin B12 supplements only boost energy in people who are actually deficient — here's exactly who that is, and why doses run so high.