According to a survey carried out by insureblue.co.uk, in the UK one in five men has 'not visited a doctor in the last year.
(Other even more worrying results where that 6% of the men asked wouldn't visit a doctor even if they had chest pains and 2% had never even seen a doctor! I don't know if it's the same in other countries, or it's just UK men who think if you ignore it, it will go away.)