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Try one of these related symptoms.
Gynecomastia
Swollen male breast
Enlarged breasts in men
About the Symptom
An increase in the amount of breast gland tissue in boys or men, caused by an imbalance of the hormones estrogen and testosterone. This condition is usually benign (not cancer). The cause in younger men or boys is almost always hormonal changes but evaluation by a physician is recommended. In older men the chances that a breast cancer is growing are much higher. Men do get breast cancer although not anywhere near as often as women. Older men also tend to have fatty tissue under their nipples which is usually benign. Any change in the chest wall in a man, particularly under the nipples should be evaluated by a physician immediately.
When to See a Doctor
Seek professional care if you experience any of the following symptoms
- Enlarged male breasts
Possible Causes
Generally, Man breast can be related to:
- Gynecomastia
A condition in which abnormal hormone levels cause males to develop female characteristics, such as breast enlargement. Common causes include medications and brain tumors.
- Hyperprolactinemia
Excessively high prolactin (hormone that releases milk) levels in the blood. Causes include medications and brain tumors.
- Liver Cirrhosis
Cirrhosis refers to scarring of the liver which results in abnormal liver function as a consequence of chronic (long-term) liver injury. There are many different causes including infections, alcohol abuse, inherited disorders, and fatty liver.
- Hyperthyroidism
- Alcohol-related liver disease
- Drug-Induced Obesity
Doctor's Diagnostic Questions
Your doctor may ask these questions to check for this symptom:
- Have you noticed an unusual increase in your breast size?
- How long have you had the unusual breast enlargement as a man?
- How has the unusual breast enlargement changed since it started?
Reviewed By:
Alice Police, MD (Breast Surgery)
Breast Surgeon of 30 years experience. Recent Chief of breast surgery at UCIrvine Medical Center, Northwell Health in New York State, Chief of breast surgery at Monument Health in Rapid City South Dakota. Breast Cancer Researcher in conjunction with multiple studies through Notre Dame department of electrical engineering. CMO of Nearwave, a start up breast cancer device company.
Yoshinori Abe, MD (Internal Medicine)
Dr. Abe graduated from The University of Tokyo School of Medicine in 2015. He completed his residency at the Tokyo Metropolitan Health and Longevity Medical Center. He co-founded Ubie, Inc. in May 2017, where he currently serves as CEO & product owner at Ubie. Since December 2019, he has been a member of the Special Committee for Activation of Research in Emergency AI of the Japanese Association for Acute Medicine. | | Dr. Abe has been elected in the 2020 Forbes 30 Under 30 Asia Healthcare & Science category.
Content updated on Feb 6, 2025
Following the Medical Content Editorial Policy
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Link to full study:
https://www.medrxiv.org/content/10.1101/2024.08.29.24312810v1References
Sansone A, Romanelli F, Sansone M, Lenzi A, Di Luigi L. Gynecomastia and hormones. Endocrine. 2017 Jan;55(1):37-44. doi: 10.1007/s12020-016-0975-9. Epub 2016 May 4. PMID: 27145756.
https://link.springer.com/article/10.1007/s12020-016-0975-9Dickson G. Gynecomastia. Am Fam Physician. 2012 Apr 1;85(7):716-22. PMID: 22534349.
https://www.aafp.org/pubs/afp/issues/2012/0401/p716.htmlNarula HS, Carlson HE. Gynecomastia. Endocrinol Metab Clin North Am. 2007 Jun;36(2):497-519. doi: 10.1016/j.ecl.2007.03.013. PMID: 17543732.
https://www.sciencedirect.com/science/article/abs/pii/S0889852907000308?via%3Dihub