The menopause is when a woman stops having periods and is no longer able to get naturally pregnant. Symptoms include hot flushes, night sweats, reduced sex drive and a low mood.
According to the NHS, the menopause normally occurs between 45 to 55, however in around 1% of women in the UK, this can happen before the age of 40.
Here are eleven celebrity women talking about their experiences.
Zoe Ball, 49
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Gillian Anderson, 48
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Angelina Jolie, 41
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Jennifer Saunders, 58
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Tracey Emin, 53
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Julie Walters, 67
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Kim Cattrall, 60
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Amanda Redman, 59
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Carol Vorderman, 56
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Ulrika Jonsson, 50
Lorraine Kelly, 57