Losing weight after 40 can be a challenge if you are a woman
Hormonal changes that occur as women age can make it difficult to lose weight, especially if you are menopausal or perimenopausal. But it is not impossible. We take you through tips and tricks to make losing weight easier as you age.
Last reviewed: July 2026
Next review: July 2029
Reviewed by: Neil Raichura
Losing weight after 40 can feel different for many women today. You might be eating the same way you always have, moving more than before, or making healthier choices, but the weight does not seem to shed as easily.
This can be frustrating, but it is also common. Changes linked with age, perimenopause, menopause, sleep, stress, activity levels, and muscle mass can all affect your weight. It doesn’t mean weight loss is impossible, just that your approach needs to change.
In this article, we’ll look at why weight loss can feel harder after 40, what can help, and when it may be worth speaking to a healthcare professional.
As you get older, your body naturally changes. Many women notice that weight is easier to gain, harder to lose, or starts to sit around the stomach rather than the hips or thighs.
One reason is that muscle mass can gradually decrease with age, especially if you become less active than before. Muscle uses energy, so having less of it can mean your body burns slightly fewer calories day to day.
Hormone changes during perimenopause and menopause can also affect your body shape. Lower oestrogen levels may make it more likely for weight to gather around your middle. At the same time, symptoms such as poor sleep, night sweats, low mood, or joint aches can make it harder to exercise, cook balanced meals and stick to healthy routines.
It’s rarely just one thing, and weight changes after 40 are usually a mix of hormones, lifestyle, stress, sleep, activity levels, and overall health. Hormone changes can also lead to more prominent abdominal fat. This can lead to health complications, such as type 2 diabetes, high blood pressure, and heart disease
Perimenopause is the time leading up to menopause, when hormone levels begin to change. Menopause is when your periods have stopped for 12 months.
During this time, you may notice symptoms such as hot flushes, night sweats, mood changes, brain fog, irregular periods, and weight gain. Some women also find they feel hungrier, have poorer sleep, or have less energy than before.
This can make weight loss feel more difficult, even if your habits haven’t changed much. For example, poor sleep can affect appetite and cravings, tiredness can make it harder to move, and stress can make it “easier” to comfort eat or snack.
That is why weight loss after 40 is not just about eating less. A good plan should support your energy, sleep, strength, and long-term health too.
Support through food choices
Balanced meals can help you feel fuller for longer and reduce the urge to snack. Try to include a source of protein with your meals, such as eggs, fish, chicken, tofu, beans, lentils, Greek yoghurt, or cottage cheese. Add vegetables, fruit, or wholegrains for fibre, and keep an eye on extras such as alcohol, sugary drinks, sauces, dressings, and high-calorie snacks. You don’t need to follow an extreme diet. In many cases, small changes to portion sizes, snacks, and drinks are easier to maintain than cutting out whole food groups. With that said, be mindful of your portion sizes and aim for a reduced calorie intake if your goal is to lose weight. Around a 150-200 calorie deficit will be enough to keep you on track without huge cravings.
Exercise for women over 40
Exercise can support weight loss, but it’s also important for your muscles, bones, heart health, mood, and sleep. A good routine includes both cardio and strength-based activity. Cardio could be brisk walking, cycling, swimming, dancing, or a fitness class. Strength training could be weights, resistance bands, Pilates, yoga, or bodyweight exercises such as squats and lunges. Strength training is especially useful after 40 because it helps protect muscle and bone strength. Note that you don’t need to lift heavy weights to benefit. The most important thing is to start at a level that suits you and build gradually. Everyday movement is just as important. Walking more, taking the stairs, gardening, housework, and standing up regularly during the day can all help you become more active without needing a strict gym routine.
Sleep, stress and weight
Sleep and stress can have a bigger effect on weight than many people realise. If you’re sleeping badly, you may feel hungrier, crave quick-energy foods, or have less motivation to exercise. Menopause symptoms such as night sweats can make this even worse. Stress can also affect eating habits. It’s common knowledge that some people snack more when stressed, while others skip meals and feel overly hungry later. Neither is a personal failure, but a sign that your routine may need more support. Simple changes such as keeping a regular bedtime, reducing caffeine later in the day, limiting alcohol, and building gentle movement into your week may help. If poor sleep, anxiety, night sweats, or low mood are affecting your daily life, speak to your GP.
Hormone replacement therapy, or HRT, is used to help with many menopause symptoms.
HRT is not a weight loss treatment, and it should not be used for weight loss alone. However, if menopause symptoms are making it harder to sleep, exercise, or feel like yourself, treating those symptoms may make healthy routines easier to maintain.
Some women worry that HRT causes weight gain. Weight gain is common around menopause, but this can happen whether or not you take HRT. Your GP can explain the benefits and risks and help you decide whether HRT is suitable for you.
Prescription weight loss medication may be an option for some women, especially if lifestyle changes have not been enough and your BMI meets the treatment criteria.
Weight-loss medicines such as Mounjaro and Wegovy work by helping reduce appetite and supporting feelings of fullness. They might not be suitable for everyone and should only be used after a clinical assessment. Your pharmacist will check your BMI, medical history, current medicines, and weight loss goals before deciding whether treatment is safe for you.
Orlistat is another weight loss medicine. It works differently by reducing how much fat your body absorbs from food. Because of how it works, it can cause side effects such as oily stools, wind, and needing the toilet more urgently, especially after high-fat meals.
Weight loss medication works best alongside long-term lifestyle changes. It is not a quick fix, but it may be helpful for people who need extra support. Always consult your pharmacist to find the best solution for you.
Speak to a GP or pharmacist if you have been trying to lose weight for several months without progress, your weight is affecting your health, or menopause symptoms are disrupting your sleep, mood, or daily routine.
You should also speak to a GP if you are gaining weight quickly or without a clear reason, especially if you also feel unusually tired, cold, constipated, breathless, swollen, very thirsty, or notice changes to your periods.
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