Obese people tend to pick overweight mates
NEW YORK, Aug 17 (Reuters) A new UK study provides additional evidence that heavy people are more likely to choose other overweight individuals as mates.
This phenomenon is known as ''assortative mating'' - when men and women tend to select partners according to nonrandom attributes such as height, religion, age and smoking habits.
Researchers have suggested that assortative mating by obesity could increase the already high prevalence of obesity by helping to pass on genes promoting excess weight to the next generation.
To date, all studies investigating assortative mating for obesity have used body mass index or skin fold thickness to measure obesity, and many have not accounted for other potential contributing factors, Dr John R Speakman of the Rowett Research Institute in Aberdeen, Scotland and colleagues note.
Rowett and his team used a technique called dual-energy X-ray absorptiometry (DXA) to get a more precise picture of levels of body fat in their study participants, which included 42 couples. They used statistical techniques to measure and account for the effects of age, the postal code area where people had grown up, and the amount of time they had been in a relationship.
The researchers found that assortative mating for body composition had indeed occurred, with heavier people winding up with heavier mates. It's not clear why this happens, Speakman and his team note; leaner individuals may choose one another first, they suggest, leaving overweight people a more limited mate pool to pick from.
Aside
from
the
underlying
reason,
they
add,
the
fact
that
people
are
becoming
overweight
and
obese
at
earlier
ages
than
ever
before
could
be
making
assortative
mating
for
obesity
even
more
common,
because
it
is
''allowing
singles
in
their
late
teens
and
early
twenties
to
more
easily
distinguish
partners
with
obese
and
lean
phenotypes.''
REUTERS
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