No, that's not what we do with other drugs. No one goes to an IRB with "We suspect this drug is bad for people, we should run a study to find out," and gets app

No, that's not what we do with other drugs. No one goes to an IRB with "We suspect this drug is bad for people, we should run a study to find out," and gets approval for that study. If you wanted to perform an observational study on whether or not people already consuming LSD are at heightened risk of stroke, I highly doubt the federal ban would affect that.