New Scientistreports that size of newly born babies in the U.S. is shrinking in scientists do not know why.
A 52-gram drop in the weight of full-term singletons - from an average of 3.441 to 3.389 kilograms - has left Emily Oken's team at Harvard Medical School scratching their heads. It can't be accounted for by an increase in caesarean sections or induced labours, which shorten gestation.
The article says the light weight will not matter for regular size babies but it could be significant for premature babies if they are born even lighter.
