A groundbreaking study has proposed that the regular consumption of a daily multivitamin might decelerate the body's biological clock, potentially fostering a healthier ageing trajectory. Researchers have calculated that adhering to a multivitamin regimen for two years could reduce biological ageing by around four months. This implies an enhancement in health and functional vitality, rather than merely extending chronological years.
Understanding the Research on Multivitamins and Ageing
Published in the esteemed journal Nature Medicine, the investigation focused on biological ageing through microscopic alterations in DNA. The study analysed blood samples from 958 randomly selected healthy individuals, whose average chronological age was 70. Scientists examined specific DNA sites, known as "epigenetic clocks," which serve as indicators of ageing.
Methodology and Key Findings
Experts monitored five distinct DNA regions for changes at the trial's commencement, as well as at the conclusion of the first and second years. The results revealed that participants in the multivitamin group exhibited a slowdown in ageing across all five areas when compared to those taking placebo pills. These changes translated to approximately four months less biological ageing over the two-year period.
Lead author Dr Howard Sesso, associate director of the division of preventive medicine at the Mass General Brigham Department of Medicine in the United States, commented, "A significant number of individuals take multivitamins without definitive knowledge of their benefits. Therefore, expanding our understanding of their potential health advantages is crucial." He added, "This study paves the way for exploring accessible, safe interventions that contribute to healthier, higher-quality ageing."
Expert Perspectives and Cautions
While many specialists endorse this research, they concurrently emphasise that a multivitamin is not superior to consuming a nutritious, varied diet abundant in fruits and vegetables. Dr Laura Sinclair, a lecturer in healthcare and postdoctoral researcher at the University of Exeter, noted that epigenetic clocks "are powerful tools for measuring biological ageing, yet they represent only one component of the ageing puzzle."
She elaborated that factors such as DNA damage, protein modifications, and disruptions in cellular communication also significantly influence ageing. Dr Sinclair stressed that the study does not advocate for universal daily multivitamin use. "If an individual maintains a nutritionally balanced diet, many dietary supplements may be unnecessary for their specific needs," she explained. "However, the majority of adults in the UK do not consume a nutritionally balanced diet and could likely benefit from a multivitamin-multimineral supplement. In fact, the UK government recommends that adults consider taking a vitamin D supplement during autumn and winter."
Mixed Results and Ongoing Investigations
Previous studies on multivitamins and health have produced inconsistent outcomes. For instance, a 2024 study found no benefit in preventing premature death, while other research suggests potential positive effects. People typically take multivitamins to bolster their immune system, enhance energy levels, and improve overall nutrition.
Professor Luigi Fontana from the University of Sydney, who also serves as a director of healthy longevity research, remarked, "This is a well-conducted trial, but the interpretation of the findings warrants caution." He further stated, "The magnitude of the effect is exceedingly small, and it was not consistent across all ageing measures evaluated. Overall, the findings are scientifically intriguing, yet they do not furnish compelling evidence that daily multivitamin intake meaningfully slows human ageing."
Additional studies are currently underway to determine whether these effects are enduring. The research received funding from Mars Edge, a division of Mars, which included the provision of multivitamins for the study.
