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Cushing's syndrome

A medical condition of genuinely, persistently high cortisol — from a tumor or long-term steroid medication — that causes central weight gain, muscle weakness, and other characteristic changes.

By the glp1.how editorial teamReviewed

Cushing's syndrome is what happens when the body is exposed to far too much cortisol for a long time — either from a tumor that drives cortisol production or, more commonly, from long-term use of steroid medications such as prednisone. It's uncommon, and distinctive in its full form: fat shifts to the abdomen, face, and upper back, muscles weaken, skin thins and bruises easily, and blood sugar and blood pressure rise.

It's the kernel of truth behind the "cortisol makes you fat" story, but it's nothing like everyday stress. For someone on a GLP-1, the practical point is that unexplained rapid central weight gain, easy bruising, or muscle weakness are reasons to talk to a care team, not to buy a supplement. See the guide on cortisol, stress, and weight on a GLP-1.

Source: NIDDK (external link).

cushingscortisolhormonesendocrine

Revision history

Updated 2 times since Sep 2, 2026 · show changes
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    Body revised

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    Body revised

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Related terms

  • Cortisol · The main glucocorticoid hormone, released by the adrenal glands on a daily rhythm to raise blood sugar, sharpen alertness, and manage stress; chronically high levels break down muscle and, in true excess, drive central fat.
  • GLP-1 · A gut hormone (glucagon-like peptide-1) that stimulates insulin release, slows digestion, and reduces appetite; the target of drugs like semaglutide and liraglutide.

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