Vitamin C, folate, potassium delay aging
Telomeres are the end-caps that protect each strand of chromosomes in every cell. Chromosomes contain the DNA instructions to reproduce a healthy cell, but each time a cell divides, telomeres shorten, eventually stopping cell division. The longer the telomere, the younger biological age of the organism. In this study, doctors measured the nutritional value in the diets of 1,958 Korean men, age 40 to 69, and followed up 10 years later to measure telomere length.

There were no differences in men over age 50, which doctors said was probably because the older participants got fewer nutrients overall. For men under age 50, those who consumed the most vitamin C, folate, and potassium had longer telomeres than men under 50 who got less of these three nutrients, indicating younger biological age.

Reference: Journal of Human Nutrition & Dietetics; August, 2016, Published Online.
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