The current lack of scientific information "poses a public health risk," said the report , from the National Academies of Sciences, Engineering and Medicine. Patients, health care professionals and policy makers need more evidence to make sound decisions, it said. A federal focus on paying for studies of potential harms has also hampered research into possible health benefits, the report said. - There's limited evidence for the idea that it hurts school achievement, raises unemployment rates or harms social functioning. But there's no evidence either way on whether chronic use affects a person's risk of a heart attack.

Source: Fox News January 13, 2017 13:23 UTC