Study Compares Cancer Risk Between Intrauterine Devices

Types of Intrauterine Devices

A recent study has investigated the cancer risk associated with two types of intrauterine devices (IUDs): non-hormonal copper IUDs and hormone-releasing IUDs. An IUD is a small device inserted into the uterus to prevent pregnancy. Each type of IUD offers its own set of benefits and risks.

Copper IUD and Cervical Cancer Risk

One lesser-known advantage of the copper IUD is its potential to present a lower risk of cervical cancer compared to hormone-releasing IUDs. A study published in the journal *Obstetrics & Gynecology* highlighted that users of copper IUDs have a reduced risk of developing cervical cancer when compared to those using hormone-releasing devices.

Study Details and Findings

The research involved over 10,000 women who used these devices from 2003 to 2018. The researchers conducted analyses that adjusted for various factors that could influence health outcomes. The findings revealed that the diagnosis of high-grade cervical cancer was 0.7 percent among copper IUD users, in contrast to 1.8 percent for those using hormone-releasing IUDs. This indicates that copper IUD users are at a lower risk of developing high-grade cervical neoplasms.

Need for Further Research

Currently, there is no comparative data on cancer risk between IUD users and non-users. The study’s authors suggest that the differing outcomes may stem from the unique physiological effects of copper and hormonal IUDs. Further research is essential to explore these mechanisms.

Public Health Implications

In low-resource countries, where access to cancer diagnostics, vaccinations, and treatments is limited, the copper IUD’s potential to reduce cancer risk carries significant public health implications.

Author and Reference

Written by Purnima Sharma, PhD
Reference: Spotnitz ME, Natarajan K, Ryan PB, Westhoff CL. Relative risk of cervical neoplasms among copper and levonorgestrel-releasing intrauterine system users. Obstet Gynecol. 2020; 135(2):319-327.
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