Food: Truth or Scare: Episode 4

Chris Bavin and Gloria Hunniford cut through more conflicting claims and confusing messages about what people eat. Today, Gloria goes in search of the answer to a question that should be simple but is the subject of a bewildering array of conflicting reports: how much water do people really need to drink every day? Meanwhile, Chris asks whether people need to pay more attention to their gut bacteria, Danny Crates investigates if it is true that blueberries, peppermint and even ice cream can boost brainpower, and with charcoal increasingly added to certain foods, is it a secret weapon for all-round health, or just a fleeting, fashionable fad?