For this study, researchers collected data from many other studies with a sample of over 12,000 women from all over the world.
To very this, they scoured through studies that measured use of IUD and cases of cervical cancer. The Definitive Guide to Women's Intimate Health, tells Bustle.
An IUD is a safe and effective form of contraception, but using one offers no guarantee against cervical cancer.
But unfortunately the number of ladies diagnosed with cervical cancer is steadily rising, according to World Health Organisation (WHO) figures. And since the 2016 election, IUD demand has spiked 900 percent. "The possibility that a woman can reduce the risk of cancer of the uterus in choosing this method of contraception could potentially have a very large impact on the frequency of this cancer", judge said.
But the findings suggest IUDs could be an important tool in the fight against cervical cancer, which is on the rise worldwide.
"It does fit well into our understanding of the critical role of persistent HPV infection in causing cervical cancer", she said. This means that a lower proportion of women in the United Kingdom will be at risk of cervical cancer. Plus, no one is immune to HPV - anyone who is sexually active can get it, even without having sexual intercourse per se; it can also be spread through close sexual contact. The review titled, "Intrauterine Device Use and Cervical Cancer Risk: A Systematic Review and Meta-analysis" from the Keck School of Medicine of USC appeared in the online November issue of Obstetrics & Gynecology. There is no way to test for it unless it manifests itself in either a wart or an irregular pap-smear indicating cervical cancer.
Further research should however be conducted to understand the biological mechanism that provides this protection. ScienceDaily reports that some scientists say it may have to do with the placement of the IUD, and perhaps it stimulates an immune response in the cervix. "That means for decades to come this epidemic of cervical cancer is with us".
The research team said that another possibility is that when an IUD is removed, some cervical cells that contain HPV infection or precancerous changes may be scraped off.
However, Dr Pradeep Tanwar, who investigates gynaecological cancers, said the study was limiting.