How to measure aging speed?People grow old with a different speed, our calendar age not always coincides with biological. Researchers allocated a set of biological indicators which set helps to learn, quicker or more slowly than age-mates the person grows old. As scientists believe, only in 20% of cases early aging is caused by genes, a lot of things depend on environment.
On anniversary class reunions of schools and higher education institutions it is always possible to find couple of people who are allocated from the general party with the fact that look younger than peers. How they managed to remain so well? Nothing surprising, the nature and environment “is guilty“. People grow old with a different speed, our calendar age not always coincides with biological.
The international team of researchers from the USA, Great Britain, Israel and New Zealand defined 18 biological indicators which set helps to learn, quicker or more slowly than age-mates the person grows old. Results of research are published in Works of national academy of Sciences of the USA.
Studying aging processes, usually investigate a state of health of old men. But this time scientific 12 years watched over health of more than one thousand rather young people 1972 - 73 year of birth.
As a rule, about age judge by its external manifestations: on a hair color, visual acuity, flexibility of joints. Besides, scientists were interested in less noticeable indicators: functioning of kidneys, liver, lungs, metabolic and immune system. At volunteers periodically determined the cholesterol level, volume of lungs, length a telomere, carried out with them cardiorespiratory load tests, checked a dental health and tiny blood vessels in back part of an eyeball.
Based on the data which are saved up in 12 years, scientists established biological age of each participant of research which at 38 - summer volunteers fluctuated ranging from 30 till 60 years. To find out with what speed people grow old, researchers analysed a condition of their 18 biological markers measured in age of 26, 32 and 38 years.
It turned out that most of participants of research grew old with a “standard“ speed year a year. Some lost youth much quicker, moving away from it for three biological years for each calendar. Were also such which showed zero rates of aging, actually remaining young people, despite the lived years.
Initially took part in research 1037 26 - summer volunteers. In 12 years in the program there were 954 participants. Among left 12 died of diseases, 10 - as a result of accidents, suicides and drug overdose. 53 more persons stopped cooperation in whole or in part.
Many of us think that the old age comes at advanced age. But the leading author of research the associate professor of geriatrics from Duke University Deng Bielski (Dan Belsky), based on data of research, claims that signs of aging can be found also in young people.
Examinees, whose biological age exceeded calendar, showed the worst indicators, than their “standard“ peers, in load researches, tests for coordination of movements and ingenuity. Besides, they looked is more senior than the age.
Why people grow old with a different speed? Bielski considers that only in 20% of cases early aging is caused by genes, a lot of things depend on environment. “It gives hope that the medicine can slow down aging and give to people more than healthy and active years“, - Deng Bielski`s colleague professor of psychology and neurology Terry Moffit (Terrie Moffitt) believes.
Kind health and long years!