Common daily vitamin could slow biological aging, major study suggests

Common daily vitamin could slow biological aging, major study suggests

Nationwide trial reveals vitamin D's potential to preserve DNA components linked to longevity

Daily vitamin D3 could reduce biological wear and tear, equivalent to nearly three years of aging, the study found. (iStock)

Telomeres are made of repeating sequences of DNA that act like protective tips at the ends of chromosomes, similar to the plastic ends of shoelaces, according to the researchers. (iStock)

Participants of the study were randomly assigned to take either a placebo or a daily dose of vitamin D3 and omega-3 fatty acids. (iStock)

The study concluded that vitamin D helps preserve telomeres, which are "linked to the development of certain diseases" when they shorten with age. (iStock)