Andrew Huberman· PhD
But then about 20 years later, researchers figured out that it could be effective for leprosy. So, it's FDA-approved for leprosy, and then what's crazy is that shortly thereafter, it got FDA approval for multiple myeloma, a rare or somewhat rare hematologic blood cancer. And the reason that it can work for leprosy and multiple myeloma, and also the reason that it causes birth defects, is it has a major anti-angiogenic effect, so it reduces blood vessel growth.