Hyperaldosteronism: A Comprehensive Guide
Medically reviewed by Andre Stone | MD, University of Pittsburgh School of Medicine on August 24th, 2026.
Published on April 4th, 2026. Updated on August 28th, 2026.
Key Takeaways
Hyperaldosteronism causes your body to make too much aldosterone, a hormone that controls blood pressure and fluid balance
High blood pressure that's hard to control is often the first sign of this condition
Low potassium levels can occur and may cause muscle weakness, cramps, or fatigue, but many people have normal potassium levels.
Two main types exist: primary (from adrenal gland problems) and secondary (from other health issues)
Early diagnosis and treatment can prevent serious heart and kidney complications
Overview
Hyperaldosteronism happens when your adrenal glands make too much aldosterone. This hormone controls how much sodium and potassium your kidneys keep or get rid of. When you have too much aldosterone, your body holds onto too much sodium and loses too much potassium.
This condition affects about 5-15% of people with high blood pressure. It's more common than doctors once thought. Many people don't know they have it because the symptoms can be subtle at first.
The extra aldosterone makes your blood pressure rise and stay high. Over time, this can damage your heart, blood vessels, and kidneys. Getting the right diagnosis and treatment helps protect these important organs and improves your quality of life.
Your adrenal glands sit on top of your kidneys and are about the size of walnuts. They produce several important hormones that control blood pressure, stress response, and electrolyte balance. When something goes wrong with these glands, it affects your entire body's ability to regulate fluids and minerals.
Symptoms & Signs
Hyperaldosteronism often develops slowly, so symptoms may not be obvious at first. The condition mainly affects your blood pressure and the balance of minerals in your body.
Primary Symptoms
High blood pressure that's hard to control with standard medications
Low potassium levels causing muscle weakness, cramps, or fatigue
Frequent urination and excessive thirst
Heart rhythm problems or palpitations
Headaches and dizziness
When to Seek Care
Watch for severe muscle weakness that affects your daily activities. Heart palpitations or chest pain need immediate attention. If your blood pressure stays high despite taking multiple medications, talk to your doctor about testing for hyperaldosteronism.
Some people notice they feel tired all the time, even after getting enough sleep. Fatigue can have many causes. Low potassium may contribute to fatigue or muscle symptoms in some people with hyperaldosteronism. Muscle cramps that happen without exercise can also signal that your potassium is too low.
When to Seek Immediate Care
Get emergency help if you have severe chest pain, trouble breathing, or muscle weakness so severe you can't move normally.
Causes & Risk Factors
The root cause of hyperaldosteronism depends on whether it's primary or secondary. Primary hyperaldosteronism comes from problems in the adrenal glands themselves. Secondary hyperaldosteronism happens when other conditions trigger the adrenal glands to make too much aldosterone.
Primary causes include benign tumors on one adrenal gland or enlargement of both glands. These tumors are usually not cancerous but still overproduce aldosterone. Less commonly, inherited genetic conditions can cause both adrenal glands to become overactive.
Doctors sometimes find that one adrenal gland is working too hard while the other is normal. In other cases, both glands grow larger and produce too much hormone. Understanding which type you have helps your doctor choose the best treatment for you.
Age
Most common between ages 30-50, but can occur at any age
Genetics
Family history increases risk, especially for inherited forms
Lifestyle
High sodium diet may worsen symptoms but doesn't cause the condition
Other Conditions
Heart failure, kidney disease, and liver problems can trigger secondary forms
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Diagnosis
Getting the right diagnosis for hyperaldosteronism takes several steps. Your doctor needs to confirm high aldosterone levels and figure out what's causing them.
Medical History & Physical Examination
Your doctor will ask about your blood pressure history and current medications. They'll want to know if you have muscle weakness, fatigue, or heart palpitations. During the physical exam, they'll check your blood pressure and look for signs of heart rhythm problems.
Diagnostic Testing
Blood tests to measure aldosterone and renin levels, plus potassium and sodium
24-hour urine collection to check aldosterone production over a full day
CT or MRI scans of the adrenal glands to look for tumors or enlargement
Specialized tests like adrenal vein sampling to pinpoint which gland is affected
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Treatment Options
Treatment focuses on controlling aldosterone levels and managing blood pressure. The approach depends on whether you have primary or secondary hyperaldosteronism.
Conservative Treatments
Medications called mineralocorticoid receptor antagonists block aldosterone's effects
ACE inhibitors or ARBs help control blood pressure and protect your kidneys
If potassium is low, your clinician may recommend potassium supplements and will monitor your potassium level, especially when you take medicines that can raise potassium.
Low-sodium diet reduces fluid retention and helps control blood pressure
Advanced Treatments
Surgery may be an option when testing shows that one adrenal gland is producing too much aldosterone. Imaging helps assess the adrenal glands, and many people being considered for surgery need adrenal vein sampling to guide the decision.
Adrenalectomy may be recommended for some people whose testing shows excess aldosterone is coming from one adrenal gland.
Treating underlying conditions that cause secondary hyperaldosteronism
Most people see improvements in their blood pressure within the first few weeks of treatment. Your doctor will check your potassium levels regularly to make sure they're returning to normal. You may need to adjust medications as your body responds to treatment.
Living with the Condition
Managing hyperaldosteronism involves daily attention to your diet, medications, and symptoms. Most people can live normal lives with proper treatment.
Daily Management Strategies
Take your medications at the same time each day to keep hormone levels stable. Monitor your blood pressure regularly at home and keep a log for your doctor. Watch for signs that your potassium might be low, like muscle cramps or unusual fatigue. Stay hydrated but don't overdo it if you're retaining fluid.
Keeping a symptom diary helps you and your doctor track how well your treatment is working. Note when you feel tired, weak, or have muscle cramps. This information helps your doctor adjust your medications if needed.
Exercise & Movement
Regular moderate exercise helps control blood pressure and improves overall health. Walking, swimming, and cycling are excellent choices. Avoid intense weightlifting or activities that cause you to hold your breath, as these can temporarily spike blood pressure. Listen to your body and rest if you feel weak or dizzy.
Start with short exercise sessions and gradually increase the time as you feel stronger. Exercise also helps you maintain a healthy weight, which reduces stress on your heart. Always warm up before exercising and cool down afterward.
Prevention
While you can't prevent genetic forms of hyperaldosteronism, you can reduce the risk of complications by managing blood pressure and related health conditions.
Maintain a healthy weight to reduce strain on your cardiovascular system
Limit sodium intake to less than 2,300 mg per day to help control blood pressure
Get regular check-ups, especially if you have high blood pressure or family history
Manage other health conditions like diabetes and kidney disease that can contribute to secondary hyperaldosteronism
If you have family members with high blood pressure or hyperaldosteronism, let your doctor know. This helps your doctor watch for early signs of the condition in you. Eating less salt and maintaining good health habits can slow the development of complications.
Frequently Asked Questions
Primary hyperaldosteronism caused by a single tumor can often be cured with surgery. Other forms are usually managed long-term with medications that control symptoms effectively.
Blood pressure improvements often start within 2-4 weeks of beginning treatment. Potassium levels typically normalize within a few weeks, and muscle weakness improves as levels stabilize.
Most people with hyperaldosteronism need long-term treatment. However, those who have successful surgery to remove a tumor may be able to reduce or stop some medications.
Yes, untreated hyperaldosteronism can cause heart rhythm problems and increase your risk of heart attack. Proper treatment helps protect your heart health.
Most people can exercise safely with proper treatment and monitoring. Start slowly and talk to your doctor about the best activities for your situation, especially if you experience muscle weakness.
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