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You're listening to Shortwave from NPR.

Hey, Shortwaivers,ber here, and we're back with the final episode in our series on the science behind psychedelics and related drugs.

I'm here with producer Rachel Carlson, who reported out this whole series.

Hey, Rachel.

Gina, hi.

So first, this episode will make sense for people who haven't heard the previous episodes.

That said, in our last episode, we talked about why some researchers are interested in not

just the chemical effects of drugs like psychedelics and ketamine, but all these other factors

that come with them, like the trip or therapy or even expectations patients have about the drugs

themselves. Yeah. But other researchers say, while all those factors might be important,

not everyone can or wants to take psychedelic drugs. Here's one of those researchers, David Olson.

He's a chemical neuroscientist at UC Davis, and he told me,

pretend that I've got a crystal ball and I can see into the future. And in the future,

every insurance company will fully reimburse for psychedelic assisted psychotherapy.

Even in that future, there are a lot of people who will still be left behind.

For example, most practitioners would say that people who have bipolar disorder or schizophrenia

shouldn't take psychedelics. That's why David's making drugs that are inspired by psychedelics,

...