But intriguingly, a new study suggests that taking a daily multivitamin could slow biological aging. In a randomized clinical trial involving 958 adults over the age of 60, researchers found that taking a multivitamin-multimineral supplement for two years modestly slowed two molecular signals for aging in the body known as “epigenetic clocks.

Multivitamins slow down biological ageing by about two months a year among people over 70, a study suggests.