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Kate Muir: “We need to look at the Spaghetti Junction of midlife relationships”

Read Kate Muir's brutally honest take on navigating midlife relationships in her latest book How to Have a Magnificent Midlife Crisis (and enter our competition for a chance to get your own copy).

By Rebecca Roberts | Last updated Jun 13, 2025

An author photo of Kate Muir sat in a leather arm chair looking at the camera

Launching 5th June, How to Have a Magnificent Midlife Crisis promises to be the guidebook every woman needs for navigating the turbulent waters of her forties and fifties.

If you’ve ever found yourself staring at your partner across the dinner table or sofa, and wondered how you got here - or most importantly, where you’re going next - you’re not alone. In fact, over half of conversations related to midlife crises since the start of 2025 on Mumsnet have discussed relationship shifts (especially loss of spark, infidelity, or the decision to divorce) as being the most frequent triggers of a midlife crisis*. 

Journalist and author Kate Muir has captured the raw reality of midlife relationships in her forthcoming book, and below is an extract that encapsulates the complex mix of love, frustration and transformation that defines this pivotal life stage for many women, on and off our Talk boards. 

“We’re reclaiming the midlife crisis from men with red sports cars and Rapha bike shorts,” Muir tells Mumsnet. “Women have got far more reason than men to have a midlife crisis: our brains completely rewire in perimenopause and menopause as hormones change.” It’s a compelling argument, especially when she explains that relationship breakdown is so central to midlife crises for two key reasons: "one is the eternally unequal domestic, emotional and work burden for women raising families, and the other is our erratic hormonal rollercoaster and its crash around menopause."

The timing couldn't be more relevant. As Muir points out, “when our loving ‘mummy’ hormone estrogen and our calming hormone progesterone drain away, we are left raw, and often see circumstances as they really are. We question our closest relationships, and we often feel rage or demand more – and that's when we need to reboot relationships, or leave."

A shot of Kate Muir's How to Have a Magnificent Midlife Crisis book on a table

Kate Muir's How to Have a Magnificent Midlife Crisis is available to purchase from June 5th

This isn't just about hormones though: it's about identity. "Women are looking at bigger changes, and are beginning to question our purpose in life, particularly after we have survived raising kids or caring for sick parents," she explains. The search for meaning becomes urgent when combined with what she calls the "perimenopausal sex surge" – that time when "estrogen hits massive highs in our mid to late forties, before crashing at menopause."

From throwing butternut squash at kitchen walls (yes, really) to questioning everything you thought you knew about yourself and your relationships, Muir's unflinchingly honest account speaks to experiences many of us recognise but rarely discuss openly. As she puts it: "I felt really lost and out of control in my late forties and early fifties, so I wrote this guidebook so other women can negotiate the midlife maelstrom better. But now I'm out the other side, I'm having the most fulfilled and sexy time of my life, and doing work I really care about campaigning on women's health."

Win a copy for yourself

We've got 10 copies of Kate's newest release here at MNHQ up for grabs. Enter your details below for a chance to win a copy of How to Have a Magnificent Midlife Crisis of your own.

Extract from How to Have a Magnificent Midlife Crisis by Kate Muir

Chapter: Divorce, the Moneypause and the Couplepause

‘I love my husband, but sometimes I watch him through the prongs of my dinner fork and imagine him in jail.’

That anonymous comment perfectly expresses the frustration – and love – that many of us struggle with in a decades-old marriage or relationship. Which way will it tip for each person? Will the future hold acquiescence or anarchy? What if you no longer want to be half of a couple, but your whole self instead? What if your time together just happens to be up? Some people grow together with their partners, some grow out of their partners, and others grow up and find their partners. We need to look at the Spaghetti Junction of midlife relationships, menopause, mothering and labour – and consider ways not to crash the car.

We know about the unpredictability of menopause’s dastardly little sister, perimenopause, and how hormones don’t just drain away in your forties, but behave badly and unpredictably before finally leaving at the average age of 51. The calming hormone progesterone goes on strike, ramping up anxiety and anger, and mood-enhancing estrogen leaps and plunges by the day or week, creating a dangerous combination of sexy highs for some, and miserable lows, all of which increase the likelihood of arguments, affairs and separation, especially if the cracks were already there. Not surprisingly, the average age of divorce for a woman in the UK is 44, right in perimenopause central.

That could also be due to The Rage, during which perimenopausal irritation boils up into volcanic anger, usually directed at family or colleagues, often when they are committing such heinous acts as eating crisps loudly. This anger is not easy to live with for everyone else because it can be sudden and apparently unreasonable. These are the items I threw, in my forties, when I was dealing with three children, a sick mother, a dog, and a full-time job at The Times. Over a couple of years, the following ended up hitting the kitchen wall: blue poster paint, broccoli, a butternut squash, a full butter dish, and a copy of Nigella Christmas. No one was injured, I cleaned up the mess (the bits of broken china in the butter were particularly trying), tension was released, and everyone felt better and behaved better afterwards.

Previously I had never shown signs of a volatile temper, and I don’t have one now, probably because I’m on calming HRT, but I share this with you as a window onto the fact things change in midlife – we change in midlife – and that has a profound impact on our relationships.

In both heterosexual and same-sex relationships, midlife brings a devastating combination of factors: many women have lowered libido, or don’t want to have now-painful penetrative sex (and don’t know about rejuvenating vaginal estrogen), so that can result in rejection and anger issues, often on both sides – or worse.

Of course, some couples decide at this midlife stage that sex is one thing and their long relationship and companionship quite another, and they can hold those two points of view simultaneously. Midlife is a time when couples’ libidos become out of sync, be it decreased sex drive, or the perimenopausal sex surge, or lowered testosterone and erectile dysfunction. Or there’s the sheer boredom. ‘Suddenly they are not satisfied with the sex that they are having. And they want to work on it and demand more, and their partner finds it shocking or upsetting on some level,’ said couples psychotherapist Dr Kalanit Ben-Ari.

There are other reasons for having an affair; obviously falling passionately in love is a good one, but some women just want to be seen again. ‘They like someone that sees them as a sexual being. It’s an identity issue: women are often looking for something in themselves, whereas – and it’s a bit of a cliché – I have sometimes found for men that affairs are often with people who admire them, look up to them.’

The hormonal and physical changes of menopause also often intersect with a particularly challenging set of life circumstances that put a lot of strain on a relationship as each partner has to reconfigure their role, and the pitfalls of inequality and resentment can be hard to avoid. As we start to have children slightly later in life, the triangular rack of mothering, perimenopause and career can stretch a person, and a marriage, to breaking point. The magnificent Margaret Atwood, author of The Handmaid’s Tale, once defined menopause as ‘a pause while you reconsider men’ – and that’s not merely as lovers, but part of your shared enterprise of work and family.

End of extract

How to Have a Magnificent Midlife Crisis by Kate Muir book product image

Kate Muir is the competent friend we all need, and she's thoughtfully brought us the most comprehensive book on midlife we'll ever read.

Jennifer Cox

How to Have a Magnificent Midlife Crisis

by Kate Muir
amazon.co.uk

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About the author

Rebecca Roberts is a writer, editor, and content marketing expert hailing from Leeds. Here at Mumsnet, she creates content that’s designed to make life easier for parents. Having birthed two DC just 15 months apart, she knows all too well how hard it can be to prioritise a relationship when you’re in the trenches of parenthood. 

Beyond her role as an editor here at Mumsnet, Rebecca can be found balancing life as a working mum of two toddlers and when she’s not at her desk, you’ll likely find her at a local playgroup, in a nearby coffee shop, or walking the dog.


*MumsGPT, 1st January 2025 - 30th May 2025