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Watch Horizon Season 55 Episode 11 Online

  • 7.4/10
  • COUNTRIES: United Kingdom
  • Subtitles: English

Nearly half of us take a vitamin or mineral supplement every day, but what are these pills sold on every high street actually doing? Digging deeper than the eye-catching words on the packaging, Dr Giles Yeo investigates who really needs a supplement by putting our diets to the test.