While the link to prostate cancer may sound surprising, there are other cancers caused by STDs.

CNN: Prostate cancer linked to sexually transmitted disease

But Labour's Chris Bryant described Ms Dorries' bill as "the daftest piece of legislation" he had seen, saying there was no evidence teaching abstinence would lead to fewer pregnancies or STDs.

BBC: Nadine Dorries: Schools should teach sexual abstinence

If you look at a population and say, OK, here are people who have a high proportion of unaccompanied men, very high stress levels because of the immigration experience, some - there's some evidence of untreated STDs being fairly high.

NPR: HIV Concerns for Many Mississippi Latinos

And increased used means less HIV, less STDs and less unwanted pregnancies.

CNN: Could condoms change the world?

Teens learn condoms don't protect you completely from human papillomavirus (HPV) and herpes, which is true, but they may not realize that they protect against all the "fluid-based STDs, " she says.

CNN: Virginity pledges don't mean much, study says

By law, children as young as 12 in California can get tested for STDs without a parent's consent.

CNN: STD site partners with school district

But, in fact, most STDs do not present symptoms, she said.

CNN: STDs still on the rise, report says

"We'll have the best information anywhere in the country for where students -- and anyone who wants to get tested for STDs -- can go, " he says.

CNN: STD site partners with school district

"That's how STDs are so easily spread, " she said.

CNN: STDs still on the rise, report says

Studies show 23% of partners of people diagnosed with STDs are ever warned they might also be at risk.

CNN: High-tech tools for STDs

STDs carry a stigma that makes surveillance and treatment difficult.

ECONOMIST: Going, going . . . gone?

Health.com: Who's most at risk for STDs?

CNN: Prostate cancer linked to sexually transmitted disease

The app screens for STDs that result in physical symptoms such as syphilis, herpes and genital warts.

CNN: High-tech tools for STDs

Tory Nadine Dorries told the Commons that while secondary school pupils were shown how to put condoms on bananas and to self-diagnose sexually transmitted diseases (STDs), they should also be told "how to say no".

BBC: Nadine Dorries: Schools should teach sexual abstinence

Many people hold the misconception that STDs come along with a visible sign, such as irregular discharge or a rash or bump.

CNN: STDs still on the rise, report says