Heart attackTaking low-dose aspirin for five years halves the risk of developing colon cancer, according to data published two years ago by Peter Rothwell, from Oxford University.
But Prof Cuzick told Newsnight the most up-to-date data showed "much stronger results".
Last year, research indicated daily low-dose aspirin cut the risk of dying by 66% for oesophageal cancer and 25% for lung cancer. When researchers looked at all solid cancers together, the risk also fell, by 25%.
This year, the team looked at aspirin's effect on the spread of cancer, and found it reduced the risk of secondary spread to the lungs, liver and the brain by "about half".
Low-dose aspirin is already recommended to cut the risk of heart attack and stroke, but there are no national guidelines on who should consider taking it to prevent cancer, or how much to take.
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