Men look set to have a one in two chance of developing cancer in their lifetime, UK experts predict.
The increase to 50 out of 100, up from the current 44 in 100 chance, is largely down to people living longer - age is the biggest cancer risk factor, says Cancer Research UK, as cited by BBC.
The cancers set to increase the most in men within the next 15 years are bowel, prostate and skin (melanoma).
But more will survive cancer, thanks to better screening and treatments.
Medical advances mean cancer survival has already doubled in the past 40 years.
The experts said one of the most pressing task is to find an effective way to screen for prostate cancer.
Not all cancer in the prostate is aggressive or life-threatening - some people live with the condition for a lifetime without any problems.
But doctors still have no reliable test that can spot which of these tumours are safe to leave alone.
Besides many men appear to be fatalistic about screening and avoid it.
For example, although men tend to be at greater risk of developing bowel cancer than women, relatively fewer men than women go for screening for this cancer.