Between 1970 and 2006 , the identification number of adult female who were age 35 or older when giving birth to their first childincreased nearly eight times . There are a variety of factor involved with this , include advanced fertility assistance techniques . However , a subject field led by Thomas Perls of Boston University School of Medicine has point that a natural power to have children later in life are more likely to live to be 95 or older . The results of the study were published in the journalMenopause : The Journal of the North American Menopause Society .
The field was in partnership with the Long Life Family Study , which analyse the genetics and other factors of people with exceptional longevity . This subject field analyse 551 families and found out that women who were naturally capable to bear children past the historic period of 33 were doubly as probable to live to be 95 old age onetime than women who block bearing children before age 30 .
" Of course this does not mean woman should look to have children at older ages in ordering to meliorate their own chances of exist longer , " Perls said in apress release . " The old age at last childbirth can be a rate of age indicator . The natural power to have a child at an older long time likely indicates that a woman ’s procreative system is aging slowly , and therefore so is the sleep of her body . ”
The research worker speculate that the ground is genetic . Certain genes have variants which regulate the effects of aging . While that may indeed be why these women are reproductively set longer , it may also extend to other historic period - related processes , allowing the women to live longer .
" If a adult female has those variants , she is able to procreate and bear children for a longer time period of clip , increase her chances of pass down those genes to the next generation , " Perls continued . He believes that this may be a ingredient in why 85 percent of people who live to be 100 are women , and only 15 percent are men .
However , the researchers did get hold one catch : this nexus only practice to women with three children or few . Having four or more small fry , even at an older age , did not correlate with the lengthy seniority .
There are certainrisk factorsassociated with advanced maternal age , including increased risk of preterm birth , fetal chromosomal irregularity such as Down ’s syndrome , hypertension , and gestational diabetes .
[ cope picture “ fraught woman ” by Teza Harinaivo Ramiandrisoa via flickr , used in conformity withCC BY - SA 2.0 ]
