we want our lives changed and we want that experience. so that certainly set things right on its head. and i've had this feeling in my bones for five or six years that something could go slightly wrong here that could sour a lot of stuff. >> like peter, there are many here who believe ayahuasca is a miracle substance with great potential. but recent headlines speak to hidden dangers. >> 18-year-old resident kyle nolan died at a spiritual retreat in peru three weeks ago. >> the death of a british teen in colombia has police shrouded in mystery. >> the boom in ayahuasca tourism has come with a price. in the last decade, several people have died after drinking ayahuasca. a majority of them in peru. experts believe mixing this jungle medicine with stimulants and antidepressants can have lethal consequences. but in most cases, the cause of