Gloria Hunniford and Chris Bavin get to the bottom of worrying reports that claim some of our favourite foods aren't just bad for us, but could even be dangerous. Gloria and her husband Steven discover if their fish-rich diets have deposited high levels of mercury in their blood. Chris investigates if it's true that parents could be risking the health of their children by bringing them up as vegan. Plus Danny Crates asks whether claims that cheese could cause cancer, or even be as addictive as hard drugs, really stand up to scrutiny.

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Documentary