If you look younger you really are aging slower

Scientists confirm that people age at wildly different rates

People grow old at radically different rates, a recent study confirms: some people look young for their age, while others appear old before their time. The Dunedin Study is a long-term health study in New Zealand, seeking clues to the aging process and tracking over a thousand people born in 1972-73 from their birth to the present. That major investigation revealed 18 biomarkers that can be combined to determine the "real" biological age of each of the participants, and whether people were aging faster or slower than their peers. "Our goal was to see if we can measure aging in young people. It's becoming increasingly clear that aging is really the cause of much of the disease and disability burden we face, but our existing science is based on aging in older people who already have a lot of age-related diseases," said Daniel Belsky, assistant research professor at North Carolina Duke University's Centre for aging.
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Running in a park in Chicago along the coast of Lake Michigan.
A person's experience of aging was also found to be influenced by their own perceptions of their well-being and by that of others. "The ultimate goal is to be able to intervene in the aging process itself, before killers such as heart disease or cancer can strike," said Belsky, also the study's first author.