Prostate cancer is the most common cancer among men in the UK.
Over 46,300 cases of the disease are diagnosed annually, with around 11,600 men dying of the disease each year.
According to a survey conducted by the Proton Therapy Centre in Prague, almost 15 per cent of men over the age of 50 admitted to having no idea of how common prostate cancer is.
Almost 40 per cent thought prostate cancer was less common than lung cancer.
The survey included 1,000 male participants in the UK.
“Much has been done to improve awareness of prostate cancer among at-risk groups, including men over the age of 50,” said Proton Therapy Centre medical director Dr Jiri Kubes.
“But our research shows there is still more to be done.”
Around one in eight men in the UK will get prostate cancer, with men over the age of 50 most at risk.
Experts say diagnosis is most common in men between the ages of 65 and 69.
Symptoms can include needing to urinate more frequently, often during the night, the need to rush to the toilet, difficulty in starting to urinate, and weak flow.
However, the disease can also be present without any symptoms.
Tests for prostate cancer include a digital rectal examination, a PSA test which measures the levels of prostate specific antigen in the blood, and a biopsy.
There is currently no screening programme for prostate cancer in the UK because it has not been proved that the benefits would outweigh the risks, according to the NHS.
“Men over the age of 50 should be keeping a close eye on the health of their prostate,” said Dr Kubes.
“For men with a family history of the disease, this should start even earlier.”
“Prostate cancer is extremely common in men but the chances of surviving the disease if you catch it early enough are good.”
“It’s therefore vital that men are aware of the early warning signs, and are visiting their GPs as soon as they suspect something may be wrong.”
Forty-three per cent of those polled recognised that prostate cancer is very common in the UK.
However, over two per cent still thought it affected only a small number of people.
Around 22 per cent of those aged 50 to 55 confessed they had no idea how common it is. This dropped to just eight per cent in those aged 66 and over.