Here, we review the role of epigenetics in aging and longevity with a focus on DNA methylation.

这里，我们回顾了表观遗传学在衰老和长寿中的作用，集中在DNA甲基化。

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These effects are demonstrated in life-history traits of an organisms, for example, development, growth, aging, longevity, survival and reproduction.

这些影响涉及到生物的生长发育、寿命、存活和繁殖等方面。

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According to the Bureau of Labor Statistics, the health care and social assistance industry will create some 28% of all the new jobs in the U.S. from 2010 to 2020, as extended longevity and an aging population push up demand for all kinds of health care professionals.

FORBES: The Best Jobs In Health Care

Improved longevity means enormous expansion in care and services for the aging, advances in orthopedics, and an explosion in devices to both treat and monitor chronic illness.

FORBES: Where Your Job Is 2013

Longevity genes appear to slow down the aging process by making cells and tissues more stress-resistant, better able to withstand the inevitable environmental insults that accumulate over a lifetime from bad diet, inflammation, radiation, genetic mutations and toxic chemical by-products called free radicals.

FORBES: Researchers are unlocking the mysteries of aging.