When shouldn't Aspirin be used?

We posed this question to Professor Peter Rothwell from the University of Oxford...

Peter - Well, anyone with a history of bleeding from the stomach or from the gut should certainly talk to their doctor first. There are other treatments that can be given to help that and allow them to take Aspirin. Anybody with asthma should certainly discuss it with their doctor. Some patients with asthma are allergic to Aspirin, so those are the two main areas.