Vitamania: pill-pop your way to health?

Worried about having enough vitamins and minerals in your diet? Easy! Here's a pill. Problem solved....maybe. The vitamins and supplements industry is huge: this year, global sales will be about $100 billion, and almost a billion of us take one regularly. Think about what all that clever marketing does for sales. Dr Derek Muller digs into this tangled pile in the new documentary, Vitamania. He travels the world, speaking to experts in every country. Along the way he learned what too much vitamin D can do, nuts in space, and...rotten fish. Interview by Rod, via phone. Derek Muller will appear on stage for his debut Australian tour, along with the premiere of Vitamania: . 30 July in Perth . 2 August in Sydney . 3 August in Melbourne . Or watch it on Sunday, August 12 on SBS at 8.30pm;  and then on SBS On Demand www.VitamaniaTheMovie.com