Hormonal Contraception and Health, Explained Without the Jargon
Hormonal Contraception and Health: what it is, why it matters, and what published guidance actually asks of you.
Several are genuinely protective and rarely mentioned, and a small number of risks are specific enough to change which method suits you.
Key takeaways
- Combined pill: associated with reduced ovarian and endometrial cancer risk
- Main serious risk: venous thromboembolism with combined methods
- Most useful single change: Tell your prescriber about migraine, smoking, blood pressure and clot history.
- Commonest mistake: Combined hormonal methods if you have migraine with aura.
- See a doctor if any of the signs under "When to speak to a doctor" below apply to you.
The short answer
The wider health effects of hormonal contraception beyond preventing pregnancy.
Where it fits
This is part of Thyroid And Hormones. Below: the numbers first, then what to do with them.
The numbers, in one place
| Measure | Figure |
|---|---|
| Combined pill | associated with reduced ovarian and endometrial cancer risk |
| Main serious risk | venous thromboembolism with combined methods |
| Contraindicated | migraine with aura, smoking over 35, previous clot |
| Progestogen-only methods | suitable for many who cannot use combined ones |
| Bone density | a consideration with the contraceptive injection |
What that means in practice
The practical version:
- Tell your prescriber about migraine, smoking, blood pressure and clot history
- Ask about long-acting methods, which are most effective
- Review your method as your circumstances and age change
- Use condoms alongside for STI protection
What gets people into trouble
Common wrong turns:
- Combined hormonal methods if you have migraine with aura
- Combined methods if you smoke and are over 35
- Assuming side effects mean all hormonal methods will suit you badly
Where to go next
- What People Get Wrong About Hormonal Contraception and Health
- Hormonal Contraception and Health for Beginners: Where to Start
- Hormonal Contraception and Health — the reference entry
- Hormone Replacement Therapy: Sorting the Evidence From the Noise
- What the Guidance Really Says About Underactive Thyroid
When to speak to a doctor
Seek urgent medical help for calf pain or swelling, chest pain, severe breathlessness, coughing up blood, sudden severe headache, weakness on one side, or sudden vision loss while using combined hormonal contraception — these can indicate a clot or stroke. Stop the method and seek assessment.
Where this comes from
- NICE — Contraception clinical knowledge summary
- Faculty of Sexual and Reproductive Healthcare — guidance
How this page was put together
Every figure, recommendation and warning above is taken from the guidance named in Where this comes from. Nothing on this page is inferred, summarised or generalised beyond what those bodies publish: where they give a number, it is their number, and where they are silent, so are we. Pages are rebuilt whenever the underlying record changes. Sign-off by a named clinician, where it has happened, is shown at the top of the page along with the date.
Medical disclaimer
This article is general information, not medical advice. It cannot account for your own history, medication or circumstances. Always speak to a GP, pharmacist or another qualified health professional before making changes that affect your treatment, and never delay seeking medical advice because of something you have read here. In an emergency, call 999.
Spotted something wrong? Report an error on this page. We correct on the page and say what changed.
