Daily Multivitamins May Slow Cognitive Decline by Two Years, Study Finds

A simple daily multivitamin may help slow cognitive decline in older adults, according to new research. The findings suggest that basic supplements could improve memory and mental sharpness by up to two years. With nearly one in four Americans projected to face higher risks of Alzheimer’s by 2060, the study offers a straightforward approach to brain health. The COcoa Supplement and Multivitamin Outcomes Study (COSMOS) followed over 5,000 Americans aged 60 and older for three years. Participants took either a daily multivitamin or a placebo, with 573 undergoing detailed in-person cognitive tests.

The multivitamin contained over 20 essential micronutrients, including B vitamins, vitamin D, vitamin E, and minerals. Unlike expensive 'brain-boosting' supplements, it was a standard, affordable formula. Results showed clear improvements in the multivitamin group. Episodic memory, which helps recall recent events, saw statistically significant gains. Global cognition, covering overall mental sharpness, also improved modestly but meaningfully. Researchers noted that the benefits equated to roughly two years of slower cognitive aging. This difference could help older adults maintain independence and handle complex tasks for longer.

The study challenges the idea that complex or costly supplements are necessary for brain health. Instead, filling basic nutritional gaps may be enough to protect cognitive function. With cognitive decline expected to rise, a simple daily multivitamin could offer an accessible way to support long-term brain health.