Cannabidiol or CBD oil has had a recent surge in popularity but is there any evidence for it having any health benefits? Dr Margaret McCartney reviews the research. Mark visits the Dental psychology service at Guy's Hospital in London and talks to Tim Newton about dental phobia, the treatment available and how successful it is at treating a phobia which affects 1 in 10 people in the UK. Also what causes gout and why has advice changed on the best way to treat it? Mark talks to rheumatologist, Dr Tim Tait at United Lincolnshire hospitals.