Prince Harry says psychedelic drugs helped him — but what about the risks and dangers?

Millions of people are using psychedelic drugs, with Prince Harry, Elon Musk and others openly discussing their use. Doctors and health experts weighed in on the details and dangers.

During a recent online chat with trauma expert Gabor Maté, Prince Harry admitted that psychedelic drugs helped him acknowledge the death of his mother, Princess Diana, and to move forward from that trauma. Some psychedelics are found in nature, derived from trees, plants and seeds. Others are synthetically created in laboratories. An estimated 5.5 million U.S. adults use psychedelics, though they're largely illegal. "These medicines are both currently undergoing trials for FDA approval, which so far have shown positive results." "Due to the mind-altering effect of psychedelics, people should be monitored in a safe environment." Psychedelics can induce unpleasant feelings such as paranoia, psychosis, disorientation and loss of coordination, said one medical expert. Melissa Rudy is health editor and a member of the lifestyle team at Fox News Digital. 

In an interview with Anderson Cooper of "60 Minutes" right after his book, "Spare," came out, the Duke of Sussex also said, "I would never recommend people to do this recreationally. But doing it with the right people if you are suffering from a huge amount of loss, grief or trauma — then these things have a way of working as a medicine," Prince Harry admitted.