Half of all British men are likely to be diagnosed with cancer during their lifetime by the year 2027, experts predict.
Men in the UK currently have a 44% chance of developing the disease.
Women's risk is also expected to increase from 40% to 44% in the next 15 years.
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Temperatures will reach around 28 Celsius (82F) at their highest.
A minute's silence will be observed at 11am on Thursday in remembrance of those who lost their lives in the Manchester Arena attack.
New research has found those who consumed two cups had a 35% reduced risk, and for those who drank five cups, the risk halved.