hormone excess

Imagine a thermostat that gets stuck calling for heat even when the room is already warm — the furnace just keeps running. Hormone excess is the endocrine version of that: a gland (or sometimes a tumor) pumps out far more of a hormone than the body needs, and because each hormone has powerful effects, the surplus drives a recognizable disease state.

Excess can arise in several ways. A gland may overproduce on its own, often because of a tumor or overgrowth that ignores the body's normal off-switch (the feedback loop that should quiet it down). Excess can also come from a tumor in a place that does not normally make that hormone, or from taking too much hormone as medication. The pattern of symptoms usually points to which hormone is involved — too much thyroid hormone speeds everything up, too much cortisol redistributes fat and weakens muscle, too much growth hormone enlarges the hands, feet, and jaw.

Doctors confirm hormone excess by measuring blood or urine levels and, crucially, by testing whether the excess can be suppressed. A healthy gland turns off when given a feedback signal; an autonomous tumor does not. Treatment aims at the source — removing or shrinking a tumor, blocking hormone synthesis with drugs, or, where the cause is medication, lowering the dose.