A comprehensive study Finds Daily Multivitamins Do Not Prolong Lifespan, analyzing health records from nearly 400,000 generally healthy adults over a 20-year period, has concluded that daily multivitamin supplements do not offer significant health benefits or reduce mortality risk. Led by researchers at the National Cancer Institute, including Dr. Erikka Loftfield and colleagues, the study utilized data from three major U.S. health studies initiated in the 1990s, tracking detailed information on participants’ multivitamin usage.
The study cohort, totaling 390,124 initially healthy adults, was monitored for more than two decades. Despite widespread multivitamin use, which sees nearly half of UK adults taking them weekly and a global market worth tens of billions annually, the findings did not support the notion of reduced mortality risk or other measurable health advantages from daily multivitamin consumption. In fact, the study reported a 4% higher mortality risk among multivitamin users during the early years of observation.
These results challenge the prevailing belief that multivitamin supplements contribute significantly to overall health and longevity. While specific vitamins like vitamin C for preventing scurvy or antioxidants for slowing age-related macular degeneration have demonstrated benefits, experts argue that multivitamins often fail to deliver on their claimed health benefits, dubbing them as “overpromising and underdelivering.”
Dr. Neal Barnard, an adjunct professor of medicine at George Washington University and co-author of a commentary accompanying the study, underscores the superiority of obtaining vitamins from natural food sources within a healthy diet. He advocates for diets rich in a variety of micronutrients, macronutrients, and fiber while minimizing saturated fat and cholesterol intake.
Duane Mellor, a registered dietitian and senior lecturer at Aston Medical School, acknowledges the potential role of multivitamins in supplementing specific nutrient deficiencies, such as vitamin D during winter or vitamin B12 for vegans and vegetarians. However, he emphasizes that supplements alone cannot compensate for poor dietary habits.
In summary, this large-scale study provides compelling evidence that daily multivitamin use does not lower mortality risk or confer significant health benefits for generally healthy adults. It reinforces the importance of focusing on a balanced and nutritious diet as the primary means of obtaining essential vitamins and minerals for maintaining overall health. These findings challenge the widespread belief in the necessity of multivitamin supplements and highlight the critical role of dietary quality in promoting long-term health and well-being.
