I seen that program and what a pile of shit it was. They were saying how much stronger weed is these days than it was in the 60's - 70's, bollocks. Stronger strains are more available these days but there was still super strong weed years ago. It's like saying bananas weren't yellow in the 60's or something. If it did cause phsycotic illnesses then there would be an epidemic, how many people smoked weed in the 60's and 70's? There would be millions of schizophrenics or whatever running round the streets.