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A woman's month of birth determines more than
just her star sign, it also influences the age when menopause
begins. Scientists from the University of Modena in Italy have
discovered that women born in March have the earliest age of
menopause, while those with an October birthday have the latest.
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LONDON, May 12 (Reuters)
"The age of menopause is influenced by the season in which
the female is born," said Dr Angelo Cagnacci, an associate
professor of obstetrics and gynaecology at the university.
The findings, reported in the journal Human Reproduction, support
the theory that environmental factors before birth have an
impact on the baby's adult life. "It shows prenatal life is
important for future adult life. Things that happen before
delivery, during pregnancy, may determine many things in adult
life, including when reproduction ends," Cagnacci told Reuters.
In a study of 3,000 Italian women, the researchers said there
was an 18-month difference in the age of menopause depending
on the month of birth. After controlling for factors such as
smoking, weight and age at puberty, which can affect menopause,
the researchers said women born in October reached the menopause
at 50 years and 3 months, compared to 48 years and 9 months
for those born in March.
They do not know why, but suspect
temperature and sunlight could influence the growth of the
foetus in the womb and its later reproductive life. They added
that the effects of the months on the age of menopause could
be different in other parts of the world because of seasonal
changes.
"Our present data seem to indicate that women born
in autumn develop better during their prenatal life and are
born with a higher number of oocytes (eggs) than women born
in spring," said Cagnacci.
"An alternative explanation may
be that early mortality is highest among children born in autumn,
thus selecting the fittest for survival, although other studies
do not support this hypothesis," he added in a statement.
The
scientists are now looking at whether a woman's birth month
has an impact on her psychological profile and moods. "There
is a clear seasonal modulation," Cagnacci said.
Source:
Reuters
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Reuters Limited.
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