Stephen Lankenau has spent years studying how people use cannabis in everyday life. As director of Drexel University’s Medical Cannabis Research Center, he has watched legalization spread, products grow stronger and daily use become increasingly common.

More and more athletes have been tapping into THC/CBD products to try to enhance their performance, feel less pain while training or competing, or aid their recovery from workouts, which includes improving their sleep. The use of THC—the primary ...

Alabama has one of the strictest conditions in the nation for medical marijuana, requiring monthly pregnancy tests in a doctor’s office for certain patients.