Fertility-treatment babies smaller, study says

October 31, 2011 2:59:06 PM PDT
Babies conceived through fertility treatments might be somewhat smaller at birth than newborns conceived naturally, according to a new study in the journal Fertility and Sterility.

Researchers found that babies born to women with fertility problems weighed a little less, about a third of a pound, on average.

They were also at somewhat greater risk of having low birth weight babies, defined as less than five and a half pounds.

The reasons are not fully clear, but some researchers believe that the underlying fertility problems may play a bigger role than the treatments themselves.