A new study suggests that daily multivitamin use could potentially slow the progression of certain biological aging markers in older adults. The study, published on March 9 in Nature Medicine, discovered that taking a multivitamin every day for two years resulted in a slight reduction in biological aging compared to those who did not take the supplements.
Overall, the effect resulted in around four months reduced biological aging during the two-year period. Researchers highlight that chronological age is the number of years a person has lived, whereas biological age reflects the state of the body at the cellular level. The available data suggest that regularly taking multivitamins might have a small effect on biological processes related to aging.
However, scientists warn that the findings do not necessarily imply that taking multivitamins will increase life expectancy. Instead, the findings suggest that those who take them may see a minor alteration in their aging trajectory. Experts suggest that this type of research aims to do more than just find ways to live longer. It also seeks to understand how people can stay healthy as they get older.
Why This News Matters
A fresh study published in Nature Medicine suggests that older adults could potentially mitigate certain biological markers of aging with a daily multivitamin. The impact, while modest—equating to roughly a few months gained over two years—contributes to the expanding scientific inquiry into not just lifespan, but the quality of life as we grow older. It also shows the difference between chronological age (how many years someone has lived) and biological age (how the body is aging at the cellular level).
Study Design and Biological Aging Measurements
The findings are based on an examination of 958 healthy participants from the COSMOS clinical study in the United States. The average age of the participants was about 70 years. Blood samples were taken when the patients first joined the study, and again at 12 and 24 months later.
The researchers used five different epigenetic clocks to determine biological age. These clocks function as biomarkers, quantifying DNA methylation patterns—chemical modifications of DNA that accumulate with age. Through the analysis of these molecular alterations, the researchers were able to approximate the biological age of the study participants. The participants were then divided into four groups, each receiving a different combination of cocoa extract, multivitamins, or a placebo.
After evaluating the data, researchers discovered that taking a daily multivitamin caused a detectable slowing in two of the five epigenetic clocks utilized in the study. These biological clocks are considered indicators of mortality risk, meaning they are linked to a higher chance of developing age-related diseases or dying sooner.
Results Show Small but Consistent Effects
The observed slowing, as shown in the study, was moderate but statistically significant across the biological markers that changed. Over a two-year period, one epigenetic clock known as PCGrimAge showed around 1.4 months less biological aging. Another clock, PCPhenoAge, indicated a slowing of about 2.6 months.
Participants who showed evidence of accelerated biological aging at the outset of the trial seemed to benefit more, with a larger slowdown in some assessments. Researchers suspect that the initial nutritional deficiencies of these individuals might be a factor.
Crucially, the cocoa extract used in the study didn't seem to influence biological aging as measured by any of the five clocks. Experts stress how important it is to sync up different biological clocks. This supports the idea that the effects we see aren't just random. But scientists say to be careful because the changes that were seen were not very big.
Experts Urge Caution and Emphasize Healthy Lifestyle
Even with the promising results, many experts are holding back on making broad health assertions right now. Researchers are careful to say that the study doesn't prove that multivitamins can stop disease or significantly lengthen life. Some scientists also point out that previous studies have shown that multivitamins may not always help people live longer and may even be linked to a higher risk of death in some groups of people.
On the other hand, some researchers say that the biological clocks used in this study are still being looked into and that their direct link to health effects in the real world isn't fully known. Experts generally agree: popping multivitamins isn't a replacement for actually living well.
A varied diet, especially one that includes a lot of fruits and vegetables, along with regular exercise and a generally healthy lifestyle, is still the best way to stay healthy in the long run. Researchers believe that more studies are needed to determine if the small changes seen in this study lead to significant benefits, such as a lower chance of getting sick or a longer life.
