Marijuana users have elevated levels of cadmium and lead in their blood and urine compared to those who abstain, a troubling new study found. Analyzing data from a group of more than 7,200 adults, ...

A study has found that marijuana users have elevated levels of heavy metals in their blood and urine compared to those who do not use marijuana. The study, published Wednesday in the Environmental ...

For most of my years on this earth, heavy metal has had nothing to do with food and everything to do with Black Sabbath and teen angst. But recently, the term has taken on a more concerning timbre.

Add Yahoo as a preferred source to see more of our stories on Google. (Getty Images/iStockphoto) People who use marijuana were found to have higher levels of lead and cadmium in their blood and urine, ...