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Big data and personalised healthcare could revolutionise medicine, or at least that's the claim at the Future in Review tech conference in Utah.

Presenter Ed Butler speaks to DeAunne Denmark who for the last six years has lived with a chronic illness that has still not been diagnosed; medic Leroy Hood, who is pioneering a "systems biology" approach to understanding every data point affecting an individual's health; plus physicist Larry Smarr, who is having every aspect of his health measured, including daily stool samples he keeps in his freezer.

(Picture: Leroy Hood, president of the Institute for Systems Biology; Credit: Kerry Sheridan/AFP/Getty Images)