Multivitamins Slow Aging in Adults, Study Finds | Mass General Brigham

The quest to not just live longer, but to live better, may have a surprisingly simple component: a daily multivitamin. A new analysis, published this week in Nature Medicine, suggests that regular multivitamin use may sluggish the pace of biological aging in older adults. The findings, stemming from a large-scale clinical trial, are prompting researchers to explore accessible interventions for healthier aging, though experts caution against interpreting the results as a universal prescription.

Biological Age vs. Chronological Age: What’s the Difference?

Our chronological age – the number of years we’ve been alive – doesn’t always reflect the state of our bodies at a cellular level. This cellular state is known as our “biological age,” and it’s a key indicator of overall health and longevity. Biological age is estimated using what are called epigenetic clocks, which look at changes in our DNA that accumulate over time. These changes, specifically DNA methylation patterns, influence how our genes are expressed and can be linked to mortality and the rate of aging. Essentially, someone with a faster biological age may experience age-related health declines sooner than someone with a slower biological age, even if they are the same chronological age.

The study, led by investigators at Mass General Brigham, evaluated the effects of a daily multivitamin on five measures of biological aging over a two-year period. Researchers analyzed data from nearly 1,000 participants in the COcoa Supplement and Multivitamin Outcomes Study (COSMOS). The results indicated a slowing of aging equivalent to roughly four months. Notably, the benefits were more pronounced in individuals who began the trial with a biological age that was already ahead of their chronological age – meaning those who showed signs of accelerated aging to begin with.

COSMOS Trial: What Did They Actually Do?

The COSMOS trial, a randomized, controlled clinical trial, initially set out to assess the effects of a multivitamin-multimineral (MVM) supplement and cocoa flavanols on cognitive function and cardiovascular health. The study enrolled older adults in the United States and followed them for several years. This recent analysis represents a secondary look at the data, specifically focusing on the impact of the MVM on markers of biological aging. Participants were randomly assigned to receive either a daily multivitamin, cocoa extract, or a placebo. Researchers then tracked changes in epigenetic clocks to assess the rate of biological aging.

Interestingly, while the multivitamin showed a positive effect, the cocoa extract did not demonstrate any impact on the aging clocks considered in the study, despite previous research suggesting potential health benefits from cocoa flavanols. ScienceAlert reports on this nuance, highlighting the conflicted data surrounding vitamins and longevity.

What Does This Mean for You? A Cautious Interpretation

It’s crucial to understand that this study does not mean that taking a multivitamin will reverse aging or guarantee a longer life. The observed slowing of biological aging was relatively modest – approximately four months over two years. The study focused on a specific population (older adults) and the results may not be generalizable to younger individuals.

Dr. Howard Sesso, the senior author of the study and an epidemiologist at Mass General Brigham, emphasizes that the findings are “encouraging” but don’t warrant a blanket recommendation for all older adults to start taking multivitamins. The Guardian quotes Dr. Sesso stating that You’ll see “no known risks” associated with multivitamin use in the trials, but also acknowledges that researchers don’t yet understand definitively who benefits and how.

The study also doesn’t address why the multivitamin might be having this effect. It’s possible that specific nutrients within the multivitamin are playing a role, or that the combination of nutrients is synergistic. Further research is needed to pinpoint the mechanisms at play.

Beyond the Multivitamin: A Holistic View of Healthy Aging

While the study offers a potential avenue for supporting healthy aging, it’s crucial to remember that a multivitamin is just one piece of the puzzle. A comprehensive approach to healthy aging includes a balanced diet, regular physical activity, adequate sleep, stress management and social engagement. These lifestyle factors have been consistently shown to have a significant impact on overall health and longevity.

It’s also important to consider the broader context of nutritional supplementation. As Mass General Brigham’s press release points out, the market is saturated with over 100,000 vitamin and dietary supplements in the US, and the evidence supporting their benefits is often mixed. This study provides some of the strongest evidence to date for a potential benefit of multivitamins, but it doesn’t negate the need for critical evaluation of other supplements.

What Comes Next: Further Research and Clinical Implications

The researchers are now planning further studies to investigate the specific nutrients within the multivitamin that may be responsible for the observed effects. They also aim to identify subgroups of individuals who may benefit most from multivitamin supplementation. Future research will also focus on determining whether the slowing of biological aging translates into tangible health benefits, such as reduced risk of age-related diseases and improved quality of life.

The findings from the COSMOS trial are likely to spur further investigation into the role of nutrition in healthy aging. This could lead to more targeted dietary recommendations and the development of personalized interventions to promote longevity and well-being. For now, the message is one of cautious optimism: a daily multivitamin may offer a small but meaningful benefit for some older adults, but it’s not a magic bullet and should be considered as part of a broader healthy lifestyle.