My DNA

Available for over a year

Ben Hammersley investigates the predictive genetics industry, which advocates claim could extend a person's lifespan by 20 years. Online companies can claim to tell people their chances of contracting a whole host of diseases and, with costs falling, such information is becoming much more accessible. Ben examines the concerns of sceptics and asks whether this is information we really want to have and what the consequences might be for the medical world.