CNN This Is Life With Lisa Ling December 7, 2014 07:30:00
They're here because they don't want to be next. >> the trip's organizer is former marine lance corporal ryan la ko. how do you feel so certain this is something that can help veterans? i mean, to bring people all the way out here to the jungle to do something that you haven't even tried before. it's kind of risky. >> it is risky, but it's a calculated risk. ayahuasca is a way to give relief to those who are suffering. at the v.a., anti-depressants, ambien, sleep aids, they don't mix very well. there's not a lot of psychotherapy with that. it's just -- >> here's a pill. >> a bandaid. ayahuasca...