Background: Telomere length may be a marker of biological aging. Multivitamin supplements represent a major source of micronutrients, which may affect telomere length by modulating oxidative stress and chronic inflammation.
Objective: The objective was to examine whether multivitamin use is associated with longer telomeres in women.
Design: We performed a cross-sectional analysis of data from 586 early participants (age 35-74 y) in the Sister Study. Multivitamin use and nutrient intakes were assessed with a 146-item food-frequency questionnaire, and relative telomere length of leukocyte DNA was measured by quantitative polymerase chain reaction.
Results: After age and other potential confounders were adjusted for, multivitamin use was associated with longer telomeres. Compared with nonusers, the relative telomere length of leukocyte DNA was on average 5.1% longer among daily multivitamin users (P for trend = 0.002). In the analysis of micronutrients, higher intakes of vitamins C and E from foods were each associated with longer telomeres, even after adjustment for multivitamin use. Furthermore, intakes of both nutrients were associated with telomere length among women who did not take multivitamins.
Conclusion: This study provides the first epidemiologic evidence that multivitamin use is associated with longer telomere length among women
Xu Q, Parks CG, DeRoo LA, Cawthon RM, Sandler DP, Chen H Multivitamin use and telomere length in women Am J Clin Nutr. 2009 Jun;89(6):1857-63. Epub 2009 Mar 11. View Abstract
Comment: Whilst results are best considered as a preliminary finding, the increase in telomere length by an average of 5.1% by those taking a regular multivitamin via modulation of oxidation and inflammation. The indications are that the supplemental use of a multivitamin may prolong life or at least provide a younger biological cell age than those who do not supplement.