Author Michael Pollan has long been a hugely respected name for his ideas about eating.  You’ve almost certainly heard the advice ‘Eat food, not too much, mostly plants’. That’s  Pollan, who has written a series of fascinating books about what we’re eating, and where that food comes from.  But now he’s turned his mind to psychedelic substances, starting with 2018’s “How to change your mind” where he looked into the scientific revolution around psychedelic drugs.  His latest book “This is Your Mind on Plants” looks into the effects of opium, caffeine and mescaline.  He's been speaking with Jack Tame. LISTEN ABOVE