>>12072927Nine, the relationship between smoking whilst pregnant and IQ is nill, birth weight however is a better predictor but still not that strong. My aunt smoked (back in 70s) and her daughter went on to our own countries MIT with a masters in engineering. However what nicotine does to a fetus is that it will likely affect your executive function (frontal lobes) so you may end up with “ADHD” and have executive dysfunction, so you may end up feeling like an idiot and feel like you have no control over your life.