Cocaine use, even if it's casual, can soon lead to dependence. Two people describe how the drug nearly ruined their lives. Angela describes how she dealt with her two-year-old son's leukaemia diagnosis, and an expert explains the common symptoms and treatment options.In this video, Dr Ben Goldacre explains why clinical trials are important, what they involve and who can take part in one. He also describes common concerns patients might have and gives tips on what questions to ask before taking part in any research.Contact the show disabilityforum@lifefm.ie Thank U