Telomeres, DNA sequences at the end of chromosomes, can tell us a lot about aging and longevity, as shorter telomeres are associated with many age related diseases, such as heart disease and cancer. To determine the relationship between DNA and diet, Harvard researchers analyzed food intake and telomere length from over 4,600 healthy nurses using data from the Nurses’ Health Study. Researchers found that people with the greatest adherence to the Mediterranean Diet (lots of vegetables, fruits, grains (mostly unreﬁned), ﬁsh, legumes, and nuts, and less meat) had the longest telomeres, a good indicator of healthy aging. Additionally, the scientists pointed out that no one speciﬁc food was pinpointed as the best, reinforcing the importance of a well-rounded, healthy diet.
British Medical Journal. 2014 Dec 2;349. (Crous-Bou M et al.)