The Combined Contraceptive Pill: Understanding Its Cancer Protective Benefits and Risks

The Combined Contraceptive Pill: Understanding Its Cancer‑Protective Benefits and Risks

1. What Is the Combined Contraceptive Pill?

The combined contraceptive pill contains synthetic versions of oestrogen and progestogen. It is widely used in the UK to prevent pregnancy and also offers several non‑contraceptive health benefits.

i) Cycle regulation
ii) Managing heavy periods or,
iii) Improving acne.

According to the NHS, the pill is over 99% effective when taken correctly. 

Research from UK health bodies also shows that the pill has important cancer‑protective effects, alongside a few small risks.

Reference: NHS - Combined Pill Overview
Reference: FSRH - Combined Hormonal Contraception Guideline

Does the Combined Pill Protect Against Cancer?

Yes.

Evidence from Cancer Research UK and long‑term UK studies shows that the combined contraceptive pill can reduce the risk of ovarian, womb (endometrial), and bowel cancer, and these protective effects can last for many years after stopping.

Cancer‑Protective Benefits of the Combined Pill

1. Lower Risk of Ovarian Cancer

Cancer Research UK reports that taking the combined pill reduces ovarian cancer risk by around 30–50%, with protection increasing the longer the pill is used. This benefit can last for decades after stopping.

Reference: Cancer Research UK - Ovarian Cancer Risk and Hormonal Contraception

2. Reduced Risk of Womb (Endometrial) Cancer

The combined pill significantly reduces the risk of endometrial cancer. According to Cancer Research UK, using the pill for as little as five years can reduce risk by around 50%.

Reference: Cancer Research UK - Endometrial Cancer Risk Factors

3. Reduced Risk of Bowel Cancer

Cancer Research UK notes a modest reduction in bowel cancer risk among combined pill users. While the effect is smaller than for ovarian and womb cancer, it is still considered a meaningful protective benefit.

Reference: Cancer Research UK-  Bowel Cancer Risk Factors

Cancer Risks Associated With the Combined Pill

1. Slight Increase in Breast Cancer Risk

Cancer Research UK explains that there is a small increase in breast cancer risk while taking the combined pill. However:

Reference: Cancer Research UK - Breast Cancer Risk and Hormonal Contraception

2. Slight Increase in Cervical Cancer Risk

Long‑term use (5+ years) may slightly increase cervical cancer risk. The NHS notes that this risk decreases after stopping the pill. Regular cervical screening remains essential.

Reference: NHS- Risks of the Combined Pill
Reference: Cancer Research UK - Cervical Cancer Risk Factors

Balancing the Benefits and Risks

Large UK studies, including those referenced by Cancer Research UK, show that the combined pill is associated with an overall reduction in lifetime cancer risk, largely due to its strong protective effects against ovarian and womb cancer.

The FSRH also states that for most women, the benefits outweigh the small temporary risks. However, individual medical history should always be considered with a healthcare professional.

Reference: FSRH - Combined Hormonal Contraception Guideline
Reference: Cancer Research UK - Hormonal Contraception and Cancer

Who Should Avoid the Combined Pill?

According to the NHS and FSRH, the combined pill may not be suitable if you:

A clinician can help determine the safest option for you.

References: NHS - Who Can Take the Combined Pill
References: FSRH - Medical Eligibility Criteria

How to Decide if the Combined Pill Is Right for You

Choosing contraception is personal. Consider:

At Nora Health, we make accessing contraception easier with free NHS delivery, discreet packaging, and trusted support.

Take control of your contraception with confidence. Nora Health delivers NHS contraception straight to your door — fast, discreet, and completely free. Explore your options today and feel empowered in your reproductive choices.

Unsure what pill is best for you?

Check out of contraception choices tool or make an appointment for any questions you may have.

Conclusion

The combined contraceptive pill offers significant cancer‑protective benefits, particularly against ovarian and womb cancer, while carrying only small, temporary risks for breast and cervical cancer. Understanding these effects helps women make informed decisions about their reproductive health.

References:

NHS: Combined Pill Overview
Cancer Research UK: Hormonal Contraception and Cancer
FSRH: Combined Hormonal Contraception Guideline
NICE: Contraception Quality Standards