Estrogen does a lot more than control your reproductive system. It interacts directly with skeletal muscle, including how your muscles repair and rebuild themselves and how they respond to exercise. It also influences mitochondrial function, glucose metabolism, fat storage, and other processes. When estrogen falls during menopause, those systems change at the same time.
If you’re a woman reading this, there are things you can do. You can thrive in menopause. Men, if you care about the women in your life, you need to read this article.
Menopause can be really rough. It can make it harder for a woman to stay lean and muscular, and the changes can happen even when the number on the scale barely moves. You can lose lean tissue while gaining abdominal fat, which changes your body composition without producing a dramatic change in body weight. Muscle contains estrogen receptors, which is likely why menopause usually comes with this muscle loss and fat gain.
A new 2026 analysis of more than 4,300 adults found that among middle-aged and older women, higher estradiol and bioavailable estradiol were associated with greater grip strength. Women who had used menopause hormone therapy also had greater grip strength than women who had never used it, and the difference became larger at older ages.
When you begin intervening is important because some of these changes start before menopause. During perimenopause, the years when estrogen levels become increasingly erratic and then decline, women can start to experience that muscle loss and fat gain. It’s tricky because you might still weigh the same, eat the same foods, and train the same way while your body composition starts moving in a different direction. Getting a regular DEXA scan or body composition scan is a good way to track this. It can tell you how much of your weight is fat vs. muscle.
Not only can you lose how much muscle you have, you can lose muscle quality too. Muscle has to do more than take up space on your body. It needs to contract, produce force, use energy efficiently, and respond to the demands you place on it. When those functions decline, getting lean and staying strong takes more work. Or just more biohacking.
Here’s what we’ll get into in the full version:
Why menopause makes it harder to stay lean and muscular.
What estrogen has to do with belly fat and body composition.
The new HRT data on strength and muscle.
Why you can train hard and still see your body change during menopause.
Biohacking tips to stay strong, lean, and physically capable as you age.
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