Contraception in perimenopause: what changes after 45

Why the question still comes up

There is a sentence heard a lot at appointments : "at my age, there is no point any more". It is false. Cycles become irregular, ovulations become further apart, but they do not disappear, and one ovulation is enough.

Perimenopause is in fact a period when irregularity makes tracking impossible. A 22-day cycle followed by a 50-day one : no calendar-based method holds up in those conditions. Unplanned pregnancies after 45 exist, and they almost always occur in women who thought they were out of the woods.

Several reviews devoted to this precise moment of reproductive life recall this reality and offer practical guidance¹²³.

What changes in choosing a method

Before 40, the conversation turns mainly on effectiveness, comfort and tolerance. After 40, a third criterion moves to the centre : vascular risk.

The French CNGOF recommendations devoted to contraception after 40 structure this reading precisely⁴. Four elements weigh more than before :

• Smoking. Combined with estrogen after 35, it changes the nature of the thrombotic and arterial risk. The HAS memo on contraception in women at cardiovascular risk advises against combined estrogen-progestin contraception beyond 35 below 15 cigarettes a day, and rules it out from 15 cigarettes a day.
• Migraine. With aura, it is a contraindication to combined contraceptives, at any age. Without aura, the HAS advises against them after 35, and rules them out when the migraine appears while contraception is already under way. We come back to this in our article on migraine in menopause.
• Blood pressure. Uncontrolled hypertension rules out estrogen, and a pressure equal to or above 160/100 mmHg is a contraindication.
• Personal or family history of venous thrombosis. A personal history of a clot in the leg or a pulmonary embolism is a contraindication to combined estrogen-progestin contraception.

The CNGOF, in its recommendations on contraception after 40, draws a hierarchy from this : long-acting contraception and progestogen-only methods are to be preferred, because they offer good effectiveness with fewer risks, and combined estrogen-progestin contraception is not a first choice at this age.

None of this prevents you from being on contraception. It points towards estrogen-free methods, which are numerous and effective.

The options, honestly presented

The copper coil. No hormones, first-rank effectiveness, an insertion that lasts several years. Its drawback is known : it tends to increase the volume and duration of periods. When these are already heavy, it is not the best choice.

The levonorgestrel intrauterine system. This is the one with the most interesting profile at this age, because it does two things at once : it provides contraception and it strongly reduces menstrual volume. Several papers argue for its use in perimenopause for that precise reason⁵⁶. If your periods have become very heavy, our article on heavy periods in perimenopause details this point.

Progestogen-only methods (mini-pill, implant). They are suitable when estrogen is ruled out. They can make bleeding unpredictable, which is sometimes experienced as one more drawback in an already irregular period of life. One exception to know : the CNGOF does not recommend continuing injectable progestogen contraception (depot medroxyprogesterone acetate) at this age.

Combined contraceptives (pill, patch, ring). They remain possible after 40 in the absence of a vascular risk factor, and they have an advantage : they regularize cycles and ease some symptoms. But the CNGOF does not place them as a first choice from 40 onwards, because of the increase in vascular and metabolic risk with age, and it recommends stopping them at 50⁴. It is a concrete reference point to keep in mind if you have been taking the same pill for a long time.

Sterilization, female or male, remains an option when the plan to have children is definitively closed. It is an irreversible decision taken with a legal period for reflection.

Contraception and hormone therapy: two different things

This is a very widespread confusion, and it has consequences. Menopause hormone therapy (MHT) is not contraception. The estrogen doses it provides do not block ovulation.

In other words : if you still have cycles and you take MHT for hot flashes, you are not protected from pregnancy. Contraception must be combined with it. Combining a levonorgestrel device with estrogen is precisely one of the ways to cover both needs at once.

Our article on hormone therapy details what it does, and what it does not do.

Abnormal bleeding is never explained by age

This is the most important message of this article. In perimenopause, cycles go out of order, that is expected. But bleeding between periods, after intercourse, or of a new heaviness must never be attributed to the transition as a matter of course.

The literature on abnormal uterine bleeding in perimenopause insists on this point : it justifies investigation, because the same complaint can cover a polyp, a fibroid, hyperplasia or, more rarely, a lesion that is better found early⁷.

Bleeding after a year of complete cessation of periods calls for an appointment, without exception and without delay.

How long should you continue?

The French reference point is as follows : the CNGOF considers that non-hormonal contraception can be stopped after twelve months of amenorrhea occurring beyond the age of 50. The HAS uses the same criterion to confirm menopause, periods stopped for more than a year, and recalls that pregnancy remains possible until ovarian function has completely stopped.

The two-year rule before 50 circulates widely : we did not find it in the French texts we consulted. Keep instead the principle of caution behind it : the earlier the menopause, the longer the doubt should last, and it is your doctor who decides.

The difficulty is that hormonal contraception can suppress periods and entirely mask the moment of menopause. The usual marker then disappears. Beware of a false good idea : the CNGOF does not recommend measuring FSH during hormonal contraception, the result not being interpretable in those conditions. The approach proposed consists instead of interrupting hormonal contraception while using a barrier method, then observing whether or not periods return.

The conclusion is less satisfying than a date, but it is the true one : the moment to stop is decided at an appointment, based on your age, your method and your history.

In short

Contraception after 45 is not a formality to let drift : it is a decision that gets reassessed, because the body has changed and the safety criteria are no longer the same as at 30.

The right reflex is to book an appointment to talk it over again, even if your current method has suited you for ten years. The question to ask is simple : "given my age, my blood pressure, my migraines and my periods, is this still the right method for me?"

⚠️ This article is provided for informational and educational purposes only. It does not replace medical advice, diagnosis or treatment. Always consult your doctor or a qualified health professional with any questions about your health.

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