Researchers report daily vitamin D3 supplementation was associated with reduced cellular aging, as measured by telomere length, in older adults.
By yourNEWS Media Newsroom
Daily vitamin D supplementation may slow key markers of biological aging, according to new findings drawn from a large U.S. clinical trial that tracked cellular changes over several years.
Researchers analyzing data from the VITamin D and OmegA-3 TriaL (VITAL) found that adults who took 2,000 international units of vitamin D3 each day experienced significantly less telomere shortening than those given a placebo. Telomeres are protective DNA caps at the ends of chromosomes that gradually shorten as cells divide, a process widely associated with aging and age-related disease.
The study, published in The American Journal of Clinical Nutrition, followed more than 1,000 participants between the ages of 50 and 79. Blood samples collected over the course of the trial showed that individuals receiving vitamin D retained, on average, about 140 more base pairs of telomere length than those not receiving the supplement. Researchers said that difference corresponds to a delay in biological aging of nearly three years.
Telomere shortening has been linked to chronic inflammation, oxidative stress and increased risk of conditions such as cardiovascular disease, cancer and neurodegenerative disorders. The findings suggest vitamin D may help counter these processes, potentially extending the period of life spent in good health rather than simply prolonging lifespan.
The VITAL trial was initially designed to study the effects of vitamin D and omega-3 fatty acids on cancer and cardiovascular outcomes, but its scale and long follow-up period allowed researchers to assess cellular aging markers as well. Participants assigned to omega-3 supplements did not show meaningful changes in telomere length, highlighting a distinct effect associated with vitamin D.
Researchers noted that vitamin D’s impact on telomere preservation appeared strongest among participants without obesity, those not using cholesterol-lowering medications and across multiple ethnic groups. The findings suggest that overall metabolic health may influence how effectively vitamin D supports cellular aging processes.
Vitamin D is produced naturally in the body through exposure to sunlight and is also obtained through diet and supplements. Beyond its established role in bone health, previous research has linked adequate vitamin D levels to immune regulation, reduced inflammation and lower risk of certain cancers.
While the results are encouraging, the authors cautioned that the trial was not originally designed to study telomeres and that most participants were older adults, many of whom were white. They said additional studies are needed to confirm the findings in broader populations and to determine whether personalized dosing strategies could enhance benefits.
Still, the research adds to growing evidence that maintaining sufficient vitamin D levels through safe sun exposure, diet or supplementation may play a role in promoting healthier aging at the cellular level.
Watch this video to learn about the anticancer benefits of vitamin D.
This video is from the Medicine Science Society channel on Brighteon.com.
Source: Natural News
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