Little things, like taking a shortcut through the park on your way to work each day can make a big difference

to your mental health. Find your little big thing

little big thing at every mind matters. Imagine that you're going about your day and suddenly someone stabs a hot knife into your temple.

It plunges into your About 1,000 and 1,000 people experience such headaches,

but for those that do, they're excruciating.

Now, imagine that you took a psychedelic drug

and all of a sudden, your brain splitting headaches

went away.

You definitely want to investigate that, right?

For science quickly, I'm science journalist and author Rachel Newer.

You're listening to to trip or not to trip

part two of a three-part series on the science of psychedelics. In 2009, we were approaching the research administration at Harvard University in Boston where I was a visiting professor

to conduct a study on patients which suffering from cluster headaches because they have found

by themselves that they could treat their condition quite

well with LSD or solosybin.

That's Torsten Passy, a professor of psychiatry and psychotherapy at Hanover Medical School

in Germany.

He's been researching psychedelic drugs for about 40 years.

We were sitting there in this big room with two fireplaces in front of a desk,

which was very large and on the other side were three research

administrators so we were sitting there and you know we were talking with them

about conducting a study about LSD but what happened is that there was a certain pause in the conversation, and then the chief of the research administration said in a very low voice, you know, you know what, we had Leary here.

...