Women who have undergone bariatric surgery are more likely
to deliver premature babies and babies with low birth weights a new study
shows.
The authors of the study looked at roughly 15,000 births
that took place in Sweden from 1992 – 2009, including about 2,500 among women
who had weight loss surgery.
On average, the women delivered about five years after
surgery.
After controlling for age, smoking and other factors that
could influence pregnancy complications, the researchers found that 10% of
children born to women who undergo bariatric surgery were delivered
prematurely, compared with 6% in other group.
A similar pattern was found for low birth weight. 5% of
children born to mothers in the surgery group were small for their gestational
age, compared with 3% in the other group.
The researchers speculate that the trends could be driven by
deficiencies in vitamins and minerals that occur after bariatric surgery, which
could affect fetal and placental growth.
Mothers who had undergone weight loss surgery did have one
advantage.
Researchers noted that excessive fatal growth
is strongly linked to obesity and is often driven by high blood sugar levels
and insulin resistance, both of which are improved by weight loss surgery.
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