The patient still uses a moderate cannabis dose for sleep and pain, a careful balance of THC and cannabidiol. But he is opiate-free, married with two children, and runs a business with 10 employees. Neurobiologist Yasmin Hurd has done pathbreaking work on the neurological risks of adolescent THC use, but she also studies the therapeutic potential of cannabidiol for opioid addiction. Recent polls show that 88 percent of Americans favor