Physician Sue Sisley has fought for years to study banned drugs as treatments for pain, addiction, and PTSD. She’s navigated a legal and regulatory maze and found creative ways to secure funding for her clinical trials.

By suing the US Drug Enforcement Administration, Sisley helped unblock a path for researchers to grow medical-grade cannabis. Now, she strives to lead the world’s first FDA-approved study of whole psilocybin mushrooms.

And all this started by listening to her patients.

Read the story in Nature.