Daily Multivitamin Habit May Slow Biological Aging, New Study Suggests

Daily Health

13/03/2026

A daily multivitamin habit could potentially slow down the biological aging process, according to groundbreaking research from Mass General Brigham. The study, published in Nature Medicine, indicates that consistent intake of multivitamins over two years led to a measurable slowdown in cellular aging among older adults.

Key Takeaways

Taking a daily multivitamin for two years slowed biological aging by approximately four months in older adults.
The benefits were observed across multiple biomarkers of aging, including those linked to longevity.
The most significant effects were seen in individuals who were already biologically older than their chronological age.

Understanding Biological Aging

Biological aging refers to the rate at which our cells age, which can differ from our chronological age. This process is often marked by changes in DNA, such as DNA methylation, where specific patterns on the DNA molecule change over time. These changes, also known as epigenetic changes, can influence how our genes are expressed.

The Study's Design and Findings

The research involved nearly 1,000 healthy older adults, averaging 70 years of age. Participants were divided into groups, with some receiving a daily multivitamin-multimineral supplement, others a cocoa extract, and some a placebo. The study analyzed blood samples over two years, examining five different "epigenetic clocks" that measure age-related DNA alterations.

Those who consistently took a multivitamin showed a slowdown in biological aging across all measured biomarkers. This suggests that a daily multivitamin could contribute to healthier, higher-quality aging, aligning with the growing interest in not just living longer, but living better.

Potential and Limitations

Senior author Howard Sesso highlighted the excitement of seeing multivitamin benefits linked to biological aging markers, opening doors for accessible and safe interventions. However, the exact component within the multivitamin responsible for this effect remains unclear, with possibilities ranging from various vitamins to minerals.

It's important to note the study's limitations. The observed aging effects were modest, and it is not yet known how these changes might translate into actual medical outcomes or a longer lifespan. Furthermore, the study population was primarily composed of older adults of European ancestry, meaning the findings may not be universally applicable to all demographics.

Future Research

Future studies are planned to investigate whether the slowdown in biological aging continues and to explore the impact on clinical outcomes. Researchers also aim to examine other potential benefits of daily multivitamins, such as improvements in cognitive function and a reduced risk of cancer. The study was funded by the National Institutes of Health.

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