Daily Multivitamin Slows Aging by 4 Months in 2-Year Study

Imagine slowing down your body's aging process with something as simple as a daily multivitamin.

Researchers at Mass General Brigham just discovered that older adults who took a daily multivitamin for two years showed measurable slowing in their biological aging. The study, published in Nature Medicine, analyzed DNA samples from 958 healthy participants with an average age of 70.

The team measured five different "epigenetic clocks" that track how our cells age, which can differ significantly from our actual age in years. People taking multivitamins showed slower aging across all five clocks, with the most significant changes appearing in the two clocks that predict mortality.

Over the course of two years, multivitamin users gained back about four months of biological age compared to people taking placebos. That means their cells were aging more slowly, giving them a small but measurable cushion against time's effects.

The study drew from the COcoa Supplement and Multivitamins Outcomes Study (COSMOS), which randomly assigned participants to take either cocoa extract, multivitamins, both, or neither. Only the multivitamins showed the aging benefit, regardless of whether people also took the cocoa extract.

Here's where it gets even more interesting. Participants who started the trial biologically older than their actual age saw the strongest improvements. Their bodies responded most dramatically to the nutritional support, suggesting multivitamins might help catch up people who've fallen behind.

Why This Inspires

Lead researcher Dr. Howard Sesso notes that many people take multivitamins without knowing if they actually help. Now there's measurable proof that this accessible, affordable choice can make a real difference in how we age at the cellular level.

The research team plans to explore whether these biological improvements translate into other health benefits they've observed in the COSMOS trial, including better cognition and reduced rates of cancer and cataracts. They're also investigating whether the anti-aging effects persist after people stop taking multivitamins.

Dr. Yanbin Dong from Georgia's Medical College emphasizes that additional studies will determine whether slowing biological aging leads to improvements in actual health outcomes and longevity.

For millions of older adults already taking daily multivitamins, this research offers the first concrete evidence that their simple habit might be giving them extra time at the cellular level.