Most people know the feeling of trying to stay healthy without knowing which habits actually matter.
You eat as well as you can, try to get enough rest, and still wonder whether one small change could make a difference later in life.
That question is part of the reason supplements remain so popular. Now, a new study suggests one familiar product may be linked to slower biological aging, though the evidence is still far from settled.
What the study found
Researchers behind a study in Nature Medicine looked at older adults in the COSMOS trial and measured changes tied to biological aging over two years.
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The group taking a daily multivitamin appeared to age slightly more slowly than those who did not.
The effect was limited rather than dramatic, translating to only a few months’ difference. The study drew attention because it focused on measurable changes in the body rather than general wellness claims.
Why experts are cautious
Scientists believe the result may be related to better intake of vitamins and antioxidants that support normal cell function.
That could be especially relevant in older adults, who are more likely to have nutritional gaps.
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But the broader research picture is mixed. Another major analysis published in JAMA Network Open found no clear proof that multivitamins help healthy adults live longer, which is why many experts say the latest findings should be viewed carefully.
Who may benefit most
A daily multivitamin may be more useful for people with increased nutritional needs, including older adults, vegans, and those with restrictive diets. Even so, doctors and dietitians continue to stress that food should come first.
A balanced diet remains the strongest foundation for healthy aging. Supplements may help in specific situations, but they are not a shortcut.
Sources: Prevention and JAMA
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