Most people assume high blood pressure comes from eating too much salt, stress, or a lack of exercise. While these factors do play a role, they are not the whole story. Around 85–95% of hypertension cases have no clearly identifiable cause, but in 5–15% of cases, high blood pressure is driven by an underlying condition — known as secondary hypertension. One important and often overlooked cause is an endocrine (hormonal) disorder where a gland produces excess hormones, silently driving blood pressure up.
3 Endocrine Conditions Linked to High Blood Pressure
1. Primary Aldosteronism
A tumor in the adrenal gland that produces excessive amounts of a hormone that regulates salt and fluid balance.
Warning signs:
- Blood pressure that is very difficult to control, even with multiple medications
- Low potassium levels in the blood
- Fatigue, muscle weakness, and frequent cramping
2. Cushing’s Syndrome
The body produces too much cortisol, often due to a tumor.
Warning signs:
- Onset at a young age (under 40)
- Central weight gain, round face (moon face)
- Thin arms and legs with fat concentrated around the torso
- Early-onset diabetes or osteoporosis
3. Pheochromocytoma / Paraganglioma (PPGL)
A tumor that secretes hormones stimulating the heart and raising blood pressure in sudden surges.
Warning signs:
- Heart palpitations and excessive sweating
- Sudden severe headaches
- Blood pressure that spikes in episodes then returns to normal on its own
When should a hormonal cause be investigated?
A doctor may recommend further hormonal testing if any of the following apply:
- Blood pressure consistently above 180/110 mmHg
- Uncontrolled despite taking 3 or more blood pressure medications
- Hypertension onset before age 40
- Family history of high blood pressure at a young age
