Peter Hitchens @ClarkeMicah
.@themarcofcraig. It took decades to establish anything reseembling a *causal* link between cigarettes and lung cancer. Causation is very hard to prove. Yet the correlation was so powerful that it would have been an act of folly to ignore it. Same this time. — PolitiTweet.org
Marc Craig @themarcofcraig
@jamesfl13447170 @ClarkeMicah @MailOnline There is no long term study that show cannabis causes psychosis. If can f… https://t.co/pXlkNQH1eC