Gynecomastia: An Overview

Gynecomastia: An Overview (What It Is, Why It Happens, and What to Do Next)

Gynecomastia is the benign enlargement of male breast gland tissue. It’s common, it can happen at multiple life stages, and it’s usually tied to a hormone imbalance—specifically, relatively more estrogen activity compared to testosterone.

Gynecomastia vs. “Chest Fat” (Pseudogynecomastia)

Not every fuller-looking chest is true gynecomastia. Gynecomastia involves an increase in glandular breast tissue, while pseudogynecomastia is primarily increased fat in the chest area. The distinction matters because it can influence treatment options and expectations.

Common Causes and Triggers

Gynecomastia can occur naturally during:

• Newborn stage (temporary effects of maternal hormones)
• Puberty (often resolves on its own)
• Older adulthood (age-related hormone changes)

It can also be associated with certain medications and health conditions that affect hormone balance. Examples include some anti-androgens, certain heart medications, and underlying conditions involving the liver, kidneys, thyroid, or specific genetic syndromes.

What It Feels Like (Symptoms)

Many people notice:

• A firm or rubbery disc-like tissue under the nipple/areola
• Tenderness or sensitivity
• Swelling on one or both sides (often uneven)

If you notice a hard lump, nipple discharge, significant pain, or rapid changes, it’s smart to get evaluated.

How It’s Evaluated

A clinician typically starts with a history and exam—timing, medications/supplements, alcohol or substance use, and any systemic symptoms. In some cases, labs or imaging are used to rule out other causes and confirm what type of tissue is present.

Treatment Options

Treatment depends on the cause, severity, and how long it’s been present:

1) Watchful waiting
Pubertal gynecomastia often improves over time without intervention.

2) Address the driver
If a medication or health condition is contributing, changing the trigger (with your clinician) can help.

3) Surgical correction (male breast reduction)
When tissue is persistent or bothersome, surgery may be considered. Procedures commonly combine liposuction (fat) and excision (gland tissue), with the specific approach tailored to the individual.