Researchers at Edinburgh University suggest that the smoking ban imposed in public places has cut down premature births.

“Our study provides clear evidence that smoking bans have considerable public health benefits for perinatal and child health, and provides strong support for WHO recommendations to create smoke-free public environments on a national level. These findings should help to accelerate the introduction of anti-smoking legislation in areas not currently protected”, lead researcher Dr Jasper Been said.
Source-Medindia