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Women born in summer have fewer children
(Agencies)
Updated: 2004-04-29 09:22
Women with summer birthdays tend to have fewer children than those born
during other months of the year, according to an Austrian study published on
Thursday.
Researchers who studied birth records of 3,000 Austrian women found that birthdays had an impact on reproduction
and that females born between June and August had fewer children than other
women.
"We found that the women born in July had 0.3 fewer children per woman
than those born in December, or to put it another way, 13.4 percent fewer of the
2.24 mean number per women overall," said Dr Susanne Huber of the University of
Veterinary Medicine in Vienna.
She added that the findings, which are reported in the journal Human
Reproduction, support the results of earlier studies of birth month and
reproduction.
Huber and colleagues at the University of Vienna and the Medical
University of Vienna do not know how birth month influences reproductive
performance but they believe conditions early in life could be involved.
"In temperate zones the external environment varies with
the seasons, so the conditions experienced early in life are the result of a
variety of seasonally and socially varying environmental and maternal factors
that may all affect early development, causing potential effects on later life
events," Huber wrote.
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