Aspirin, holiday sickness, ADHD

Aspirin is over 100 years old, but doctors still can't agree whether the benefits of taking it to prevent heart conditions or cancer outweigh the risks.Dr Mark Porter investigates. And - you've worked flat out to get on holiday, then come down with a stinking cold - is there any science behind why so many of us get sick on vacation. Plus ADHD - not in children, but ADULTS - why is it so hard for grown-ups to get a diagnosis.

Producer: Erika Wright.