People wanting to lower their risk of developing cancer by taking aspirin need to take the over-the-counter medication "for at least five years", according to the scientist who established the link.
Professor Jack Cuzick told Good Morning Britain the five year timeframe was why it had taken researchers "so long to see" the health benefits.
More top news
The Government will urge the Church of England not to oppose plans to relax Sunday trading laws during a consultation starting today.
The number of night workers has risen to three million since the recession, with more women than ever working antisocial hours.
Sixteen Colombian police officers have been killed after their helicopter crashed while searching for the nation's most-wanted drug lord.