In a time when many couples are
weary and cautious of having kids and large families due to economic and other
reasons, research seem to suggest the more children women have, the slower they
are likely to age. And I am sure this would be good news to some women.
Observing chromosomes, scientists
found that women who have more kids have longer telomeres, which helps slow the
aging process.
Telomeres are caps of DNA at the
end of each chromosome. Like the tips found at the end of shoelaces, telomeres
protect chromosomes and their critical genetic information from damage.
Having sufficiently long
telomeres is essential for cells to be able to multiply. As people age,
telomeres shorten, eventually leading to cell death, according to the U.S.
National Cancer Institute.
The new study by Simon Fraser
University in British Columbia, Canada, included 75 women from two rural
communities in Guatemala. Their telomere lengths were measured through cheek
and saliva swabs taken twice 13 years apart.
The research suggested - but did
not prove - that giving birth to more children was associated with a slower
pace of telomere shortening and increased longevity.
These findings challenge previous
research that concluded that having more children accelerates the rate of
aging.
"The slower pace of telomere
shortening found in the study participants who have more children, however, may
be attributed to the dramatic increase in estrogen, a hormone produced during
pregnancy. Estrogen functions as a potent antioxidant that protects cells
against telomere shortening," said study leader Pablo Nepomnaschy, a
health sciences professor from Simon Fraser.
The researchers noted that the
women's social environment may have also influenced their slower rate of aging.
"The women we followed over
the course of the study were from natural fertility populations where mothers
who bear numerous children receive more social support from their relatives and
friends," said Nepomnaschy in a university news release. "Greater
support leads to an increase in the amount of metabolic energy that can be
allocated to tissue maintenance, thereby slowing down the process of
aging."
It is indeed the dream of the
average woman to remain young and ever pretty. This may truly be possible
considering the report of the study. But what is your choice? More kids? Or you
stay the way you are?
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