Survey studies are available on the therapeutic use of psychedelics or breathwork for PTSD, depression, or anxiety.

“And in fact, I just recently, a couple of days ago, put up a couple of surveys studies, also where we post a link to our survey study. So if you've had psychedelics, and you've taken them for therapeutic intent for PTSD, or for depression, or anxiety, you can find a link. And also, if you've done breath work for those reasons, we have a link for a study of that type up there now, which is a holotropic-style, a very psychedelic-type of breathing technique that can lead to some of these similar experiences.”