From Anti to Advocate

But there is also a clutch of extraordinary individuals who, when confronted with real evidence about the cannabis plant’s therapeutic potential, have done a 180-degree turn, transforming themselves from herb hater to cannabis campaigner.

1. The Doctor

Dr Sanjay Gupta, chief medical correspondent for CNN, is perhaps the most high-profile cannabis critic to come out in favour of the plant.

After years opposing cannabis legalization, he made a startling apology in an article titled “Why I chang...