Smoking during pregnancy increased the risk of offspring attention-deficit/hyperactivity disorder (ADHD). The risk of ADHD was greater for children whose mothers were heavy smokers than for those whose mothers were light smokers, finds meta-analysis of studies totaling 2,998,059 participants.

Smoking during pregnancy increased the risk of offspring attention-deficit/hyperactivity disorder (ADHD). The risk of ADHD was greater for children whose mothers were heavy smokers than for those whose mothers were light smokers, finds meta-analysis of studies totaling 2,998,059 participants.: http://ift.tt/2Cu3Vhq Read more... http://ift.tt/2CmRC90