Another cause of male breasts can be attributed to the use of some drugs and medications, especially steroids. Hormone-secreting tumors, although rare, can also cause some enlargement. Once men start approaching their sixties, testosterone levels naturally decrease, which can result in breast development. This is commonly known today as “low T” or andropause in men, which is similar to menopause in women.

What is Gynecomastia? | Listen to expert Dr. Delgado, Board Certified Doctor, explain.

What is Gynecomastia | Manboobs ? Dr. Delgado, Board Certified and Gynecomastia Expert explains.
Close up of male's chest before gynecomastia surgery


Gynecomastia is defined by breast gland development. In contrast, pseudogynecomastia is due to fat accumulation, with insignificant gland mass present.

Gynecomastia most commonly develops during puberty and resolves within two years in 90 percent of cases. In the remaining 10 percent, gynecomastia is present for life. As previously mentioned, the next most common cause after puberty is steroid-induced gynecomastia, which occurs in bodybuilders or the novice. Additional, less common causes are other drugs and, rarely, hormone-secreting tumors. Male breast reduction surgery is a cure for gynecomastia.

Pseudogynecomastia is due to fat in the chest and, in general, the entire body is usually overweight. Since the size of the chest will change with weight fluctuation, an enlarged chest caused by pseudogynecomastia can typically be resolved with weight loss.

In some instances, males can have gynecomastia with a variable amount of fat content. Sometimes it is difficult to diagnose this other than by the history of the condition.


Gynecomastia is also referred to as enlarged male breasts, but many people call this condition “man boobs” or “moobs.”


Every day is a struggle for the man that lives with gynecomastia. Each day typically starts with the unwelcome sight of his chest in the shower, often creating a destructive effect on ego and self-esteem. Men have learned to pick their clothing carefully so they are able to conceal their chests as best they can. Usually, they will opt for several layers of clothing, such as shirts with pockets, bulky sweaters, jackets, and dark colors to help conceal enlarged breasts. Most avoid lightweight fabrics and T-shirts, as they are too revealing.

The locker room at school poses a challenge with sports, swimming, showers, and any other type of shirtless activity, usually causing young men with gynecomastia to try to avoid such situations entirely.
For men working in a climate-controlled environment dictating a shirt, tie, and jacket, going to work is not a problem. However, there are many men who have jobs outdoors doing physical labor, which can be miserable if the weather is hot. Gynecomastia sufferers will subject themselves to extreme physical discomfort in order to avoid the psychological torture caused by teasing and insensitive comments from their peers and co-workers.

Once the day is over, a man will often consider it to be a good day if there were no comments about his chest. After the workweek ends, then the men get to deal with family outings, swimming pools, barbecues, dates, sports, and the beach. The gynecomastia sufferer must make special efforts to conceal his chest from others. Many times, it is easier to avoid the events altogether.
Feelings of shame, embarrassment, guilt, and inadequacy torment men with gynecomastia, and for most, it is an ever-present burden.

Dr. Delgado logo


Anti-Androgens – These medications are used to treat prostate conditions and other medical conditions. Some examples are finasteride (Propecia, Proscar), flutamide, and spironolactone (Carospir, Aldactone).
Androgens and Anabolic Steroids – These are sometimes used by athletes to enhance performance and build muscles.
AIDS Medication – Gynecomastia can develop in men who are positive for HIV receiving antiviral treatment. Efavirenz (Sustiva) is more commonly associated with gynecomastia than other AIDS medications.

  • Anti-Anxiety Meds – Valium is common

  • Tricyclic Antidepressant

  • Some Antibiotics

  • Ulcer drugs – Such as cimetidine (Tagamet)

  • Heart Medication – Like digoxin

  • Medication that Empties the Stomach – Such as metoclopramide (Reglan)


  • Alcohol
  • Amphetamines
  • Marijuana
  • Heroin and Methadone


While true gynecomastia requires surgery to properly treat it, other causes of gynecomastia can sometimes be treated in different ways.


Gynecomastia may be treated with medications such as raloxifene (Evista) and tamoxifen (Soltamox). Hormone therapy can also be used to increase testosterone and help balance the hormones in the body.


Decreasing the fat deposits in the male breasts can be achieved with a healthy diet and targeted exercise. Cardio and swimming are helpful, and chest exercises such as working on a rowing machine, bench presses, and push-ups.

San Francisco skyline
Dr. Miguel Office background
Dr. Miguel Delgado


Dr. Delgado is a San Francisco based plastic surgeon and has focused on gynecomastia surgery since 1990. Indisputably an authority in the surgical resolution of gynecomastia, he has performed thousands of male breast reduction surgeries and has been featured in treating patients from all over the world on international and local television documentaries and programs. Dr. Delgado is contacted frequently by other physicians for expert advice, and the most difficult cases are often referred to him. To enable men to consult with him from around the globe, he conducts virtual consultations daily—for both patients near and far. His practice has evolved to providing gynecomastia revision surgery for nearly 40-plus percent of all procedures.
It is Dr. Delgado’s personal mission and passion to help men who suffer from gynecomastia; he has even developed a website dedicated to focusing on the concerns of men with this condition: There, you can read more about his surgical approach for adult and teen patients, bodybuilders, revision cases, and pseudogynecomastia.


165 Rowland Way, Suite #300 Novato, CA 94945


San Francisco

450 Sutter St #2433 San Francisco, CA 94108

Accessibility: If you are vision-impaired or have some other impairment covered by the Americans with Disabilities Act or a similar law, and you wish to discuss potential accommodations related to using this website, please contact our Accessibility Manager at 415.898.4161.
Contact Us