How Gynecomastia Affects Men’s Chest Shape

Amaris B.

Updated On:

Aug 23, 2023

Archive Date:

Apr 15, 2023

Gynecomastia causes physical discomfort such as breast tenderness, swelling and changes in the chest shape and appearance. It can make you look feminine unintentionally too.

Table of contents

Men’s body shapes have changed over the years – perhaps due to the type of exercise undertaken (no more riding out to battle on your steed!) to the level of mobility (far less hunting and gathering), along with the food eaten, and possibly even hormone levels (man boobs). All of these can impact how a man looks physically, and also his confidence.

When it comes to thinking about what is considered the ‘ideal’ body in modern society, the discussion typically focuses on the female body image. Yet it’s an issue men face too. Dr Ivan Puah of Amaris B. Clinic shares his thoughts on what can affect men’s body shapes – and some solutions.

Gynecomastia can make you look feminine unintentionally

While it’s clear that society still places far more pressure on women than men when it comes to conforming to a particular physical image dictated by society, this doesn’t mean there’s no pressure on men. Issues of concern can include hair loss, excess body fat, problems with weight  and one of men’s most dreaded physical issues, a feminine-looking chest, also medically known as gynecomastia. This common breast disorder in men is characterised by the enlargement of male breast tissues. It affects 60 to 70% of the male population, from young to old.

Gynecomastia causes physical discomfort such as breast tenderness, swelling and changes in the chest shape and appearance. It can also impact a man’s overall physique, regardless of how fit they look in other areas of their body.

Did you know that bodybuilders who abuse anabolic steroids can develop gynecomastia? They may have defined deltoids, biceps, triceps, trapezius and abdominal muscles but if they suffer from gynecomastia, their chest may look like a pair of feminine-looking breasts instead. That’s perhaps why one of the nicknames gynecomastia has earned itself is “man boobs”!

It affects more than your physical appearance

Gynecomastia can cause emotional distress and embarrassment, particularly in social situations where you have to remove your shirt – at a beach party, for example, or by the pool.

“Patients who consult me for gynecomastia generally are very distressed, and they have low self-esteem due to their ‘feminine-looking breasts’.” says Dr Puah. “They often have difficulty finding clothes that fit and are wary of wearing light-coloured or fitting T-shirts.”

Gynecomastia is not just an aesthetic issue. It’s a medical issue that needs to be treated, as its effect on men can be extensive – mentally, physically and emotionally.

How do men get gynecomastia?

Hormone Changes

Hormonal imbalance as a result of changes and fluctuations in testosterone and oestrogen levels,  is the common cause of gynecomastia.

Men have both testosterone and oestrogen hormones in their bodies. Testosterone, the primary male sex hormone, is vital for developing and maintaining male reproductive tissues and traits. Its important functions include promoting sexual development, sperm production, sex drive, muscle growth, red blood cell production and mood regulation. Oestrogen in the male’s body regulates bone density, cholesterol metabolism and cognitive function in men, among other functions.

When hormones are off-balance, it can lead to various issues such as sexual dysfunction, infertility, fatigue, muscle and bone loss, mood changes, sleep disturbances, increased body fat and the enlargement of the male breast tissue.

Gynecomastia develops when the testosterone level is much lower in relation to oestrogen levels. However, there are cases where higher-than-normal levels of testosterone cause the body to convert this excess male hormone into oestrogen through a process known as aromatisation. This oestrogen conversion stimulates the growth of breast tissues in males, thus leading to gynecomastia.

Apart from hormonal imbalance, various other factors also play a role in its development, including synthetic drug use like anabolic steroids, ageing, secondary hormonal causes, medical conditions such as tumours, testicular disorder, pituitary disorder, liver problems and so on.


Some medications are reported to be possible causes of gynecomastia. These include antibiotics like ketoconazole, metronidazole, and isoniazid. Additionally, antiulcer medications like like cimetidine, ranitidine, omeprazole and growth hormones have also been reported to cause the condition [1]

Alcohol intakes

Consuming alcohol in excess can lead to alcoholism. This in turn may cause liver cirrhosis, which can lead to gynecomastia.

Health Conditions

It has been found that gynecomastia in adult males is commonly a result of another condition. Some examples are liver or lung cancer, cirrhosis of the liver and overactive thyroid. Hormone problems, such as cancer of the pituitary gland, adrenal glands, or testicles are also known causes of the condition [3].

Improve body confidence and chest contours with gynecomastia surgery

The good news is that some gynecomastia can resolve by itself, particularly if it’s due to hormonal changes during puberty. However, if this medical condition persists or causes significant physical pain, soreness or emotional distress, gynecomastia surgery is the surgical solution to permanently remove the enlarged breast tissues.

Gynecomastia comes in different grades, from I to IV. The size of the glandular tissues, degree of skin laxity, and whether or not there are excess chest fat tissues will determine how the gynecomastia surgery is carried out. Therefore, gynecomastia surgery cannot be done in a cookie-cutter manner. It requires a tailored approach.

“The 360°GTD technique that I developed involves making conspicuous incisions (less than 4mm) at strategic points on the chest. This allows me to carry out a clean and complete glandular tissue dissection while minimising scarring. Using this method, surgical risks of haematoma are greatly reduced. Excess chest fat will be removed via liposuction. During the fat-removal process, I’ll also carry out chest sculpting and skin tightening simultaneously,” Dr Puah explains.

Post-surgery, there is no need to insert drainage tubes into the incision site. Eliminating this step reduces the chances of wound infection. Patients can expect a flattened and well-contoured chest. Another plus point to this approach is minimal downtime and fast recovery.

A final word

Gynecomastia is treatable. There is no need to worry or suffer in silence if you have this medical condition. Set up a talk with Dr Ivan Puah to get his view on your situation. He’s the Medical Director of Amaris B. Clinic, a medical aesthetics, sculpting and fitness clinic in Singapore. The clinic has been recognised as “Gynecomastia Surgery Clinic of the Year in Asia Pacific” in 2022 and 2023 and “Body Sculpting Medical Centre of the Year in Asia Pacific” for four years in a row. It also recently won the Best Weight Management award by Singapore Tatler.


[1] Goldman RD. Drug-induced gynecomastia in children and adolescents. Can Fam Physician. 2010 Apr;56(4):344-5. PMID: 20393092; PMCID: PMC2860825.



Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form