Cervical cancer doesn’t discriminate, so why does the smear test?

Here’s a piece of confusing medical doctrine: in England, smear tests are offered to women from the age of 25. In Scotland, it’s 20. A couple of months ago, I checked myself in for a smear test, aged 23. The receptionist was easy to convince: ‘In Scotland,’ I said, ‘the age limit is lower. I’d like to have a test done.’ She understood, and booked me in.

But when it came to the appointment, there was no convincing the nurse. I asked why there were different age limits for different parts of the UK. She had no answer. Do the women of Scotland have an increased susceptibility to cervical cancer? No, she didn’t think so. So why then? No answer. At this point, she got a little exasperated with my questions, and tried to palm me off with a chlamydia test.