be reasonable, how he stopped being aggressive. >> reporter: changes that have continued long after ezra stopped taking the study drugs almost a year ago. >> he has had no regression whatsoever. i don't think it's -- it's a cure. i think it's just going to make him -- make it easier for him. you know? easier for him to live. >> reporter: interestingly, these were the same kind of long-term changes jay also experienced. >> i don't know if i would use the word heal but it's more like helping him become more himself. like, he has a right to be healthy, to be happy, to feel joy. and this is certainly helped him do that and that's all i can ask for. >> reporter: i want to be very clear, again. no one is saying there is a cure for autism. there isn't, either. but the idea that cannabis might not just treat the symptoms of autism but also help repair, even protect the brain, is something that came up again and