The cannabis extract CBD or cannabidiol is legal in many countries, and now it's finding its way into everything from soaps to cosmetics. But is it just a fad, and are its health claims bogus?

Manuela Saragosa asks Harry Sumnall, professor in substance use at Liverpool John Moores University, whether it is true that CBD is not a psychoactive substance - unlike the more infamous cannabis extract THC. And is it true that it can be used to treat the symptoms of Alzheimer's, anxiety and cancer amongst others?

Meanwhile Katie Prescott explores the booming market for CBD products. She speaks to Jim McCormick, president of cannabis brand Ignite International; Eveline van Keymeulen, head of life sciences regulations at law firm Allen & Overy; Alex Brooks of financial services firm Canaccord Genuity; and Chris Tovey of GW Pharmaceuticals.

(Picture: Cannabis leaf; Credit: digihelion/Getty Images)