Enlarged Breasts in Men (Gynecomastia)

Overview

Gynecomastia (guy-nuh-koh-MAS-tee-uh) is an increase in the amount of breast gland tissue in boys or men. An imbalance of the hormones estrogen and testosterone causes it. Gynecomastia can affect one or both breasts, sometimes unevenly.

Pseudogynecomastia is an increase in fat but not gland tissue in male breasts.

Newborns, boys going through puberty and older men may develop gynecomastia due to natural changes in hormone levels. There are other causes too.

Most often, gynecomastia isn’t a serious problem. But it can be tough to cope with the condition. People with gynecomastia sometimes have pain in their breasts. And they may feel embarrassed.

Gynecomastia may go away on its own. If it doesn’t, medicine or surgery may help.

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Symptoms

When to see a doctor

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Complications

Blood clots are a dangerous complication of atrial fibrillation (AFib). Blood clots can lead to stroke.

The risk of stroke from AFib increases as you grow older. Other health conditions also may increase the risk of a stroke due to AFib. These conditions include:

High blood pressure.
Diabetes.
Heart failure.
Some types of heart valve disease.

Blood thinners are commonly prescribed to prevent blood clots and strokes in people with atrial fibrillation.

Prevention

Healthy lifestyle choices can reduce the risk of heart disease and may prevent atrial fibrillation (AFib). Here are some basic heart-healthy tips:

Control high blood pressure, high cholesterol and diabetes.
Don't smoke or use tobacco.
Eat a diet that's low in salt and saturated fat.
Exercise at least 30 minutes a day on most days of the week unless your health care team says not to.
Get good sleep. Adults should aim for 7 to 9 hours daily.
Maintain a healthy weight.
Reduce and manage stress.

By Mayo Clinic Staff

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Diagnosis & treatment

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