It can cause you to do things that don’t make sense. Using cocaine for a long time will lead to strong cravings for the drug. A growing number of states have legalized the medical uses of marijuana.

In humans, the drug causes deep flesh wounds that sometimes bore down to the bone. Sponsor Message "People who use the drug, [their] blood circulation is poor a lot of times," Hill said.

The researchers compared these fMRI scans with images of the same participants’ brains when they did not take any drug or when they took a stimulant. They found that psilocybin caused groups of ...