The challenges of weight management in perimenopause- a holistic approach

The challenges of weight management in perimenopause- a holistic approach.

Author: Dr Aifric Boylan
Read Time: 7-9 minutes

Perimenopause, the transition leading up to menopause, brings a host of changes that can make managing weight feel more difficult than ever. I've supported many Australian women through this phase, where fluctuating hormones, busy lives, and other factors often lead to unwanted weight gain and difficulties in establishing healthy routines.

In Australia, where about one in three women over 45 are living with obesity or are overweight, understanding the challenges of perimenopause in a holistic way is key to sustainable weight management.

While prescription treatments such as hormone replacement therapy (HRT) and weight loss medications can be part of a management plan, there are many other strategies that can have a meaningful impact. In this article we’ll explore some of these other areas- hormonal shifts and their role in weight gain, vicious cycles involving mood and motivation, lifestyle pressures midlife women often face, and common co-existing health conditions that can further complicate things. Taking small, steady, health-focused steps that fit your life can really make a big difference in the long run.

Hormonal Changes and Why Weight Gain Occurs

One of the biggest issues in perimenopause is obviously the hormonal rollercoaster, particularly the decline in oestrogen and progesterone, which directly influences your metabolism. As ovarian function slows, oestrogen levels drop, leading to a shift in fat storage, often from the hips and thighs to the abdomen, increasing belly fat. This isn't just about appearance; abdominal fat is linked to higher risks of heart disease and diabetes. At the same time, aging naturally reduces muscle mass, slowing your metabolism further, so you burn fewer calories at rest. Evidence from large studies like the Study of Women's Health Across the Nation (SWAN) shows that women gain about 2-5kg on average during perimenopause, with hormonal changes contributing independently of age or lifestyle.

Progesterone fluctuations can cause water retention and bloating, adding to the sense of weight gain, while lower oestrogen affects insulin sensitivity, making it easier to store fat from carbs.

For many Australian women these changes can start as early as 45, overlapping with peak career and family demands. If obesity is present, many of the symptoms of perimenopause can feel worse, such as worsening of hot flushes and sleep disturbance.

To address this, I normally suggest a kickstart around strength-training and nutrition. It is well worth investing some upfront time in the following two areas:

Strength training (with a plan!): 2-3 sessions a week to build muscle and boost metabolism- simple home exercises like squats or resistance bands work well. Initial sessions with a PT or exercise physiologist can set you up for success and allow you to create an individualised plan, particularly if you are carrying injuries or other health issues. The last thing you need is a setback from a dodgy shoulder, knee or hip, all because you embarked on a general plan that didn’t take your own needs into account. It’s all about incremental progress- building momentum while avoiding injury!
Balanced meals (tailored to your life): I also advise women to do a nutrition “re-set” by getting proper advice from a dietitian, tailored to their own needs and any health issues they may have. While much of their advice may seem obvious, it always helps enormously to have a personalised plan. If nothing else, devoting a few hours to this activity helps you to reflect on your current eating habits and focus on building new ones. To get the most from your dietitian sessions, it’s important to share your daily routine with them, so they can understand what will actually work for you, in a practical sense. There is no point including elaborate morning food prep if you are always rushing to work or getting the kids out to school!

It may help to include “phytoestrogens” (plant-based oestrogens) from foods like soy, flaxseeds, and legumes, as these can mildly mimic oestrogen's effects. The jury is still out on how effective phytoestrogens are, but it seems some women may benefit. And, as metabolism slows, even small reductions in calories (e.g., 200-300 less daily) can help, without feeling restrictive.

Just as with exercise, the “tailored” part of a nutritional plan is really essential- for example, if you have IBS, coeliac disease, diabetes or even just particular food likes/dislikes, your plan needs to reflect this, so it can deliver sustainable results.

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Vicious Cycles of Weight Gain, Mood Fluctuations, and Motivation

Perimenopause isn't just physical- mood swings, irritability, and low energy can create a feedback loop with weight gain. Hormonal changes can lead to mood fluctuations that might prompt comfort eating or skipping workouts. This can spiral- weight gain worsens self-esteem, fuelling more mood dips and less motivation to make changes. Studies show about 4 in 10 women experience mood symptoms similar to PMS during perimenopause, which can indirectly drive overeating. In midlife women, depressive symptoms are tied to poorer eating habits and inactivity, exacerbating weight issues.

Chronic stress can raise cortisol, promoting fat storage around the middle and further dampening motivation. For many, this cycle feels overwhelming, but breaking it starts with small wins. Evidence suggests mindfulness and cognitive strategies can help, reducing emotional eating and improving adherence to your eating and exercise plans.

Practical ways to interrupt the cycle:

Mood tracking: Note your patterns in a journal, which can help you to spot triggers. Try to counteract mood dips with activities such as walking, or social connection. Get more focused strategies by organising some sessions with a psychologist- you don’t need a diagnosis of anxiety or depression to equip yourself with the cognitive tools to manage mood swings.
Short bursts of activity: Even 10 minutes of yoga or walking can lift mood and build momentum.
Support networks: Talking with friends or a group can normalise experiences, boost resolve and reduce the sense of frustration or isolation.

Lifestyle Factors Impacting Weight Management

Midlife often means juggling multiple roles- work, caring for kids, managing a home, supporting ageing parents- which leaves little time for self-care. Time poverty is a real barrier, with many women reporting less than an hour a day for personal activities, leading to skipped meals or reliance on quick, processed foods. Sedentary work, common in office or remote roles, compounds this, with Australian women spending about 8 hours daily sitting down. Alcohol intake often rises as a stress reliever, but even moderate drinking (e.g., 1-2 glasses nightly) adds empty calories and disrupts sleep, worsening hormonal imbalances.

Physical activity drops too: In Australia, women participate in sport at lower rates than men, with 2025 stats showing 22% of women versus 28% of men engaging in sport-related activities weekly. Overall, women are less active, with only 10.1% participating in organised sport in 2023, compared to higher male rates, partly due to family commitments. This inactivity accelerates muscle loss and weight gain during perimenopause.

To tackle these issues:

Meal prep hacks: Batch-cook simple, nutrient-dense meals on weekends to save time. Work with a dietitian to come up with new ideas or more efficient ways of tackling food preparation.
Incorporate movement: Start with small changes like desk stretches, short walks after dinner, or parking a little further away from your destination than you need to. But more importantly, if you are carrying too much of the burden of work at home, speak to the people in your household about ways to free up some of your time, so you can get to the gym or an exercise class.
Limit alcohol: Swap for low sugar mocktails or sparkling non-alcoholic beverages a few nights a week to cut empty calories without sacrifice. Keep the fridge stocked with a few nice options. In the winter, a wide choice of nice herbal teas can be a good distraction too.

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Co-Existing Health Issues and Their Role in Weight Challenges

Perimenopause doesn't happen in isolation- conditions like hypothyroidism, depression, anxiety, and ADHD may overlap, making weight management harder.

Hypothyroidism, affecting up to 10% of women over 40, slows metabolism due to low thyroid hormones, leading to fatigue and weight gain that mimics perimenopausal changes. Untreated, it can exacerbate symptoms, but blood tests and medication like thyroxine can restore balance.

About 20-40% of perimenopausal women experience depression or anxiety, which sap energy and motivation, leading to inactivity and poor eating. ADHD, often undiagnosed in women until midlife, affects 4-5% and worsens with hormonal shifts, impacting focus for planning meals or exercising. These conditions can create barriers but often respond well to therapy (e.g., CBT) and medications, improving overall function and weight efforts.

If your sleep is being impacted (e.g Obstructive sleep apnoea), this may prevent you from having the energy and motivation to stick with your plans and goals.

Screening is crucial: If fatigue, low mood or sleep disturbance persists, speak to your GP who might recommend blood tests, sleep studies or a referral to a psychologist.

Conclusion

Navigating weight management in perimenopause involves addressing hormonal, emotional, lifestyle, and health factors holistically. By making small, evidence-based adjustments-like building muscle, managing stress, and checking for underlying issues- you can ease the challenges and support your wellbeing.

This is general information based on current evidence- it's not personalised advice. Consult a GP or trusted healthcare professional to discuss your individual concerns.