There is a treatment that protects your bones, steadies your blood sugar and defends your muscle through menopause.

It is not a prescription. It is a barbell.

Here is what changes at menopause that makes this urgent rather than optional. As oestrogen falls, women lose muscle and bone faster, and the body becomes more insulin resistant, meaning it handles blood sugar less well than it used to. This shift towards insulin resistance is part of why weight starts to gather more quickly, and to settle around the middle. Muscle is not only for strength. It is metabolically active tissue, one of the main places your body parks glucose. Less muscle means poorer blood sugar control and weaker bones. That is the default slope of the transition. Resistance training is one of the few things that genuinely bends it.

The research here is unusually consistent, which is not something I say lightly. Lifting preserves and rebuilds muscle by switching on protein synthesis. It improves insulin sensitivity, directly countering one of menopause's least visible changes. Weight-bearing and resistance work increases or maintains bone density at exactly the sites that fracture, the spine and the hip, with gains that are modest in percentage terms yet meaningful against a backdrop of steady loss. It supports mood and sleep alongside all of that. The exercise physiologist Stacey Sims puts it bluntly, that midlife women benefit most from lifting heavy rather than from endless sessions of low-intensity cardio.

This is why I have stopped thinking of strength training as exercise and started thinking of it as endocrine maintenance.

You are not merely burning calories for the afternoon. You are giving your body back some of the metabolic and structural protection that falling oestrogen quietly takes away. Two or three properly loaded sessions a week is the dose most of the evidence is built on, not hours in the gym you do not have.

One honest caveat. After menopause the muscle-building response to training is a little blunted by lower oestrogen, which means consistency and adequate protein matter more than ever, not that the work stops paying off. The answer to a blunted response is not to give up. It is to show up regularly and feed the effort. Start where you are. Start light if you must. The one thing that does not work is not starting.

Imagine arriving in your sixties stronger, steadier and more independent than you were at fifty, because you treated the work as medicine and started in time.

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Sources:

• Princeton Sports Medicine review on strength training for postmenopausal women;
• PMC systematic review and meta-analysis on resistance training and bone mineral density;
• Mandrup et al. and Frontiers research on muscle and insulin sensitivity after menopause; Stacey Sims on resistance training in midlife women.