"When you smoke – any place – toxic particulate matter from tobacco smoke gets into your hair and clothing," said Dr Jonathan Winickoff, from Mass General Hospital for Children, in Boston, and an assistant professor of paediatrics at Harvard Medical School, who led the study."When you come into contact with your baby, even if you're not smoking at the time, she comes in contact with those toxins.
Still, it's good to know where the science is heading.When it comes to polarizing health topics, few subjects spark more debate than weed (except maybe Cross Fit or the Paleo Diet). In the study, participants sat in an MRI while they played a game, in which they pressed a button when they saw a target on a computer screen cross in front of them. Researchers analyzed 108 people in their early 20s (69 men and 39 women), all of whom were taking part in a larger study of substance use.Find out all the other ways—good and bad—marijuana could be influencing your health. But it can have a major impact on your blood vessels, according to research from the American Heart Association.After rats inhaled secondhand smoke for one minute, their arteries carried blood less efficiently for at least 90 minutes.When they were exposed to secondhand tobacco smoke, however, their blood vessels recovered after 30 minutes.