People whose fathers or grandfathers started having children at a later age may live longer, according to a new study.
Northwestern University researchers looked at telomere length in people in the Philippines. Telomeres are bits of DNA that protect the ends of chromosomes from deterioration. Longer telomeres appear to be associated with slower aging, while shorter telomeres seem to be associated with health problems that occur with aging.
Longer telomeres were found in people whose fathers and grandfathers began families later in life, according to the study published June 11 in the Proceedings of the National Academy of Sciences.
"If your father and grandfather were able to live and reproduce at a later age, this might predict that you yourself live in an environment that is somewhat similar -- an environment with less accidental deaths or in which men are only able to find a partner at later ages," lead author Dan Eisenberg, a doctoral candidate in anthropology, said in a Northwestern news release. "In such an environment, investing more in a body capable of reaching these late ages could be an adaptive strategy from an evolutionary perspective."
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