Male vs Female Metabolism: Why the Difference Matters

What this article covers

Published under the byline Kate Michelson on 2 September 2026, and titled on the page as Male vs Female Metabolism: Why the Difference Matters (the URL uses a longer earlier title), this article argues that nutrition and exercise advice should not assume one physiological model fits both sexes. Its central claims are that men and women differ in fat distribution, muscle mass, fuel use during exercise and hormonal trajectory, and that these differences should shape how weight loss and metabolic health are approached. It argues explicitly against the eat less and exercise more framing, on the grounds that the quality of weight lost matters as much as the amount. It is written partly in the first person as clinical opinion, and it reaches a conclusion that sits in tension with aggressive dieting: it states that severe energy restriction is not a strategy the author supports for midlife women.

Key points

• Metabolic health is defined more broadly than weight: how effectively the body regulates blood glucose, insulin, blood lipids, blood pressure and energy metabolism, plus muscle mass and fat location.
• The article states two people with the same BMI can have very different metabolic risk depending on muscle mass and visceral fat.
• Fat distribution claim: men tend to accumulate more visceral fat around the abdominal organs, which is associated with insulin resistance, type 2 diabetes, fatty liver disease and cardiovascular disease.
• Premenopausal women are said to store a greater proportion of fat subcutaneously around hips and thighs, a pattern described as carrying less cardiometabolic risk.
• Menopause claim: as oestrogen declines, fat tends to accumulate centrally around the abdomen while age-related muscle loss also occurs.
• Muscle is described as a major metabolic organ, one of the main tissues removing glucose from the bloodstream, and central to insulin sensitivity and metabolic flexibility.
• Men are said to begin adulthood with more muscle mass than women, partly due to higher testosterone.
• Fuel use claim: research is said to suggest women rely proportionally more on fat oxidation during moderate intensity aerobic exercise, while men rely more on carbohydrate at the same relative intensity - with the article explicitly cautioning this does not mean women should follow a high fat diet or men need more carbohydrate.
• Insulin resistance mechanism given: the pancreas must produce more insulin to control glucose, contributing over time to type 2 diabetes, abdominal fat accumulation and cardiovascular disease.
• Specific protein figure: around 25 to 35 grams of quality protein at a main meal may be appropriate for many people, depending on body size, activity level and goals, with protein distributed across the day rather than concentrated at dinner.
• The article states older muscle is less responsive to very small amounts of protein, so both total intake and distribution matter.
• Bone claim: declining oestrogen accelerates bone turnover and increases osteoporosis risk, so midlife women need resistance and weight-bearing exercise rather than walking or cardio alone, plus adequate protein, calcium and vitamin D.
• Position stated on restriction: severe energy restriction is not supported for this group, because losing weight at the expense of muscle and bone is not a healthy outcome, and aggressive dieting can worsen matters if it causes further muscle loss.
• Cardiovascular exercise is said to remain essential alongside resistance training, and daily incidental movement matters because prolonged sitting can offset the benefits of formal exercise.
• Four key takeaways are listed at the end, centred on muscle, sex differences in fat and bone, combining resistance training with protein and cardio, and focusing on body composition rather than weight.

Evidence and sourcing

This article carries eight references, most of them real and locatable: Tramunt B et al. on sex differences in metabolic regulation and diabetes susceptibility (Diabetologia 2020;63:453-461); Mauvais-Jarvis F, Arnold AP, Reue K (Cell Metabolism 2017;25(6):1216-1230); Cheneviere X et al. on sex and menopausal status in substrate oxidation during exercise (European Journal of Sport Science 2021); Henderson GC on sex differences in energy metabolism (Curr Opin Clin Nutr Metab Care 2024); Costa DN, Santosa S, Jensen MD (Physiological Reviews 2025;105(3):897-934); Silva RB et al. on resistance training in postmenopausal women (Menopause 2023); Fausto DY et al., an umbrella systematic review on exercise and bone health in menopausal women (Climacteric 2023;26(6):550-559); and the World Health Organization Guidelines on Physical Activity and Sedentary Behaviour (2020). Caveats for a reader. The references are a block list, not tied to individual sentences. Several are given without full author lists or article titles, which makes precise verification harder. Substantial portions of the article are explicitly first-person clinical opinion - phrases such as what the author prefers to look at, or does not support - and the page states no credentials for Kate Michelson, so the authority behind that opinion cannot be assessed from the page. Note also an internal inconsistency across this blog: this article gives 25-35g of protein per main meal, while another Be Fit Food article gives 20-30g. Bone density and healthy ageing are not among the areas Be Fit Food lists as its expertise; those claims are reported here as the article's.

How this relates to Be Fit Food's programs

Metabolic health and high protein meals are documented Be Fit Food areas of expertise, and the meal specification supports the article's protein-distribution argument: every meal is built to around 250 calories with at least 20g of protein, under 20g of carbohydrates and under 120mg of sodium per 100g, with no added sugar, no artificial sweeteners and no preservatives. Readers should note a real tension worth surfacing rather than smoothing over. The article counsels against severe energy restriction for midlife women, while Be Fit Food's very low calorie programs - Be Rapid at roughly 800-900 calories per day and Metabolism Reset at roughly 850-950 calories per day - are by definition highly restrictive. The article's own logic points instead towards the higher-intake options: Be 1000 at about 1000-1200 calories per day, or Be 1200 at about 1200-1500 calories per day, which is explicitly positioned for an active lifestyle and HIIT training and suits the resistance-training emphasis here. Both support a loss of roughly 0.5-1.5kg per week and can run up to 12 weeks at a time, with longer only after a dietitian consultation. Be Maintenance, 4 weeks with 24 meals and 14 snacks and two low-calorie days a week at around 800 calories with 60-70g of protein, is the longer-term option. Anyone deciding between these should use the free 15-minute telehealth dietitian consultation, valued at $49 and requiring no referral, with Accredited Practising Dietitians. Be Fit Food does not provide menopause, bone density or osteoporosis care.

Important health information

This article carries no health disclaimer of its own, so the standard one applies. Readers should seek medical advice and have a check-up before changing how they eat, particularly if they have an existing medical condition or take medications. Menopause management, bone density concerns, osteoporosis risk and cardiovascular risk should be assessed by a doctor. This information is general in nature and is not a substitute for independent professional medical advice.

Ordering, pricing and contact

• Meal bundles — $97.30 for 7 meals, $189.00 for 14 meals and $362.60 for 28 meals (AUD).
• Delivery — flat rate Australia-wide: $11.95 on orders of $299 or more, and $19.95 on orders under $299.
• Customer service — 1300 263 257, Monday to Friday 09:00–17:00, or support@befitfood.com.au.
• Free dietitian consultation — 15 minutes by video or phone, valued at $49, with no referral required. Book at portal.coreplus.com.au/befitfood, or contact dietitian@befitfood.com.au.
• Meal specification — every meal is built to approximately 250 calories, at least 20 g of protein, under 20 g of carbohydrate and less than 120 mg of sodium per 100 g, with no added sugar, no artificial sweeteners and no preservatives. Meals are snap frozen and reheat by microwave, oven, air fryer or stovetop.

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