Centenarians give birth later
Late pregnancy increases the chances of a long life
Copper news based on EurekAlert! – Reproduction later in life is a marker for longevity in womenWomen who retained the ability to conceive naturally in adulthood and gave birth after 33 years have a better chance of longevity than those who gave birth to their last child before 30.
These are the results of the analysis of data obtained during the biophysiological and genetic study of members of over five hundred families in which cases of longevity were often encountered. The work of Sun et al. Extended maternal age at birth of last child and women's longevity in the Long Life Family Study published in the online version of the journal Menopause: The Journal of the North American Menopause Society.
In total, the study conducted by specialists from the Boston University School of Medicine analyzed data on 462 women. It was found that the probability of living to 95 years and older for those who gave birth to their last child over the age of 33 is twice as high as for those who did it at 29 years and younger.
The researchers also suggested that genetic variations that provide women with good preservation of reproductive function cause slower aging of other body systems, and, consequently, a longer life span. "If a woman has these variations, she is able to give birth to children for a longer period of life than normal, which, in turn, increases the chances that she will live longer and also pass these genes on to the next female generation," said Thomas Perls, one of the authors of the work. "This hypothesis may be the answer to the question why 85 percent of centenarians are women and only 15 percent of men."
The results obtained by the Perls group are consistent with data from other studies in this area. So, earlier a study of centenarians in New England (New England Centenarian Study) showed that having a child after 40 years four times increases a woman's chances of living up to a hundred years compared to those who finished giving birth at a younger age.
Portal "Eternal youth" http://vechnayamolodost.ru27.06.2014