FoundMyFitness
Can a multivitamin change the biology of aging?
A new analysis from the randomized COSMOS trial studied repeated blood samples from 399 healthy adults around age 70 after two years of Centrum Silver or placebo. The multivitamin group had higher DHA and total omega-3 levels, a smaller rise in creatinine, slower aging across seven metabolomic clocks by an estimated 0.5 to 1.1 years, and more favorable metabolomic risk scores for 16 of 24 conditions. But the researchers tested nearly 200 outcomes: none of the three metabolites or 16 risk scores remained statistically significant after multiple-comparison correction, and none of the seven aging clocks was significant even before correction. Rhonda Patrick therefore calls the findings biologically coherent, hypothesis-generating signals rather than proven effects. The broader 21,442-person COSMOS trial found no significant reduction in major cardiovascular events, total invasive cancer or all-cause mortality, though pooled cognitive data from more than 5,000 participants showed small benefits in global cognition and episodic memory. Supplementation also measurably changed nutrient status, including 15.5% higher total carotenoids, 47% higher beta-carotene and 29.5% higher alpha-tocopherol in a separate biomarker study.
Why it mattersThe study is a useful example of why biological signals and clinical proof are different. A multivitamin may fill nutrient gaps and alter biomarkers, but this small substudy does not establish slower aging or disease prevention; the most repeatable COSMOS benefit so far is modest cognitive improvement.
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