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Why Can’t I Lose Weight? The Medical Reasons Behind Stubborn Fat

If you’ve cut calories, exercised consistently, and still can’t lose weight, it’s easy to blame yourself. But stubborn weight is often driven by biology — not a lack of discipline. Understanding the medical reasons can change everything.

Hormonal imbalances are a major culprit. Low testosterone, thyroid dysfunction, insulin resistance, and shifting estrogen or progesterone levels can all make weight loss feel impossible no matter how hard you try.

Metabolic adaptation is another factor. Repeated dieting can lower your metabolic rate, so the same efforts stop producing the same results. Chronic stress, poor sleep, and elevated cortisol add fuel to the fire.

The good news: these causes are treatable. At Progressive Health & Rejuvenation, our physicians look beneath the surface — testing hormones and metabolic markers — and build a personalized plan that may include GLP-1 medication, hormone optimization, and lifestyle support to finally break the plateau.

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Palm Beach County's Premier Regenerative Medicine & Longevity Clinic

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