New research from the COSMOS trial shows that taking a daily multivitamin for two years slowed key markers of biological aging by about 4 months in older adults — with even stronger benefits for those who were aging faster than their real age.
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https://news.harvard.edu/gazette/story/2026/03/daily-multivitamin-may-slow-biological-aging/
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Harvard GazetteDaily multivitamin may slow biological aging — Harvard Gazette
Greatest gains for participants who were biologically older, researchers say.