The menopause is when a woman stops having periods and is no longer able to get pregnant naturally.
Periods usually start to become less frequent over a few months or years before they stop altogether. Sometimes they can stop suddenly.
The menopause is a natural part of ageing that usually occurs between 45 and 55 years of age, as a woman's oestrogen levels decline. In the UK, the average age for a woman to reach the menopause is 51.
But around 1 in 100 women experience the menopause before 40 years of age. This is known as premature menopause or premature ovarian insufficiency.
Symptoms of the menopause
Most women will experience menopausal symptoms. Some of these can be quite severe and have a significant impact on your everyday activities.
Common symptoms include:
Menopausal symptoms can begin months or even years before your periods stop and last around 4 years after your last period, although some women experience them for much longer.
When to see a GP
It's worth talking to a GP if you have menopausal symptoms that are troubling you or if you're experiencing symptoms of the menopause before 45 years of age.
They can usually confirm whether you're menopausal based on your symptoms, but a blood test to measure your hormone levels may be carried out if you're under 45.
Treatments for menopausal symptoms
Your GP can offer treatments and suggest lifestyle changes if you have severe menopausal symptoms that interfere with your day-to-day life.
Your GP may refer you to a menopause specialist if your symptoms do not improve after trying treatment or if you're unable to take HRT.
What causes the menopause?
The menopause is caused by a change in the balance of the body's sex hormones, which occurs as you get older.
It happens when your ovaries stop producing as much of the hormone oestrogen and no longer release an egg each month.
Premature or early menopause can occur at any age, and in many cases there's no clear cause.
Sometimes it's caused by a treatment such as surgery to remove the ovaries (oophorectomy), some breast cancer treatments, chemotherapy or radiotherapy, or it can be brought on by an underlying condition, such as Down's syndrome or Addison's disease.
Not all women want treatment to relieve symptoms of the menopause, but treatments are available if you find the symptoms particularly troublesome.
The main treatment for menopausal symptoms is hormone replacement therapy (HRT), although other treatments are also available for some of the symptoms.
Hormone replacement therapy (HRT)
HRT involves taking oestrogen to replace the decline in your body's own levels around the time of the menopause. This can relieve many of the associated symptoms.
National Institute for Health and Care Excellence (NICE) guidelines state that HRT is effective and should be offered to women with menopausal symptoms, after discussing the risks and benefits.
There are two main types of HRT:
HRT is available as tablets, skin patches, a gel to rub into the skin or implants.
HRT is extremely effective at relieving menopausal symptoms, especially hot flushes and night sweats, but there are a number of side effects, including breast tenderness, headaches and vaginal bleeding. It's also associated with an increased risk of blood clots and breast cancer in some women.
HRT is not advisable for some women, such as those who have had certain types of breast cancer or are at high risk of getting breast cancer.
Your GP can give you more information about the risks and benefits of HRT to help you decide whether or not you want to take it.
Read more about HRT.
Hot flushes and night sweats
If you experience hot flushes and night sweats as a result of the menopause, simple measures may sometimes help, such as:
If the flushes and sweats are frequent or severe, your GP may suggest taking HRT.
If HRT isn't suitable for you, or you would prefer not to have it, your GP may recommend other medications that can help, such as clonidine (a high blood pressure medicine) or certain antidepressants.
These medications can cause unpleasant side effects, so it's important to discuss the risks and benefits with your doctor before starting treatment.
Some women experience mood swings, low mood and anxiety around the time of the menopause.
Self-help measures such as getting plenty of rest, taking regular exercise and doing relaxing activities such as yoga and tai chi may help. Medication and other treatments are also available, including HRT and cognitive behavioural therapy (CBT).
CBT is a type of talking therapy that can improve low mood and feelings of anxiety. Your GP may be able to refer you for CBT on the NHS, or recommend self-help options such as online CBT courses.
Antidepressants may help if you've been diagnosed with depression.
Reduced sexual desire
It's common for women to lose interest in sex around the time of the menopause, but HRT can often help with this. If HRT isn't effective, you might be offered a testosterone supplement.
Testosterone is the male sex hormone, but it can help to restore sex drive in menopausal women. It’s not currently licensed for use in women, although it can be prescribed by a doctor if they think it might help.
Possible side effects of testosterone supplements include acne and unwanted hair growth.
Read more about loss of libido and female sexual problems.
Vaginal dryness and discomfort
If your vagina becomes dry, painful or itchy as a result of the menopause, your GP can prescribe oestrogen treatment that's put directly into your vagina as a pessary, cream or vaginal ring.
This can safely be used alongside HRT.
You'll usually need to use vaginal oestrogen indefinitely, as your symptoms are likely to return when treatment stops. However, side effects are very rare.
You can also use over-the-counter vaginal moisturisers or lubricants in addition to, or instead of, vaginal oestrogen.
Read more about vaginal dryness and sex as you get older.
Women who have been through the menopause are at an increased risk of developing osteoporosis (weak bones) as a result of the lower level of oestrogen in the body.
You can reduce your chances of developing osteoporosis by:
Read more about menopause and bone health and preventing osteoporosis.
If you're having treatment for your menopausal symptoms, you'll need to return to your GP for a follow-up review after 3 months, and once a year after that.
During your reviews, your GP may:
Many women will need treatment for a few years, until most of their menopausal symptoms have passed.
Complementary and alternative therapies
Complementary and alternative treatments, such as herbal remedies and bioidentical ("natural") hormones, aren't recommended for symptoms of the menopause, because it's generally unclear how safe and effective they are.
Some remedies can also interact with other medications and cause side effects.
Ask your GP or pharmacist for advice if you're thinking about using a complementary therapy.