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Why Does Only a Double Chin Remain Even Though I Haven’t Gained Weight? The Real Cause of a Man’s Double Chin

21성형외과의원 · 21 PLASTIC SURGERY · December 23, 2025

Hello. I’m Lee Won, the CEO head surgeon of 21 Plastic Surgery^^ A man’s double chin is often not simply a matter of “having gained weight.” There are many cases where weight has b...

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This page is an English translation of a Korean Naver Blog archive entry. For exact wording and source context, verify against the Korean archive original and the original Naver post.

Clinic: 21성형외과의원

Original post date: December 23, 2025

Translated at: April 20, 2026 at 1:30 PM

Medical note: This translation does not guarantee medical accuracy or suitability for treatment decisions.

Hello.

I’m Lee Won, the CEO head surgeon of 21 Plastic Surgery^^

A man’s double chin is often not simply a matter of “having gained weight.”

There are many cases where weight has barely changed, or even when the person is consistently exercising and managing their diet,

only the area under the chin looks unusually thick and the jawline appears blurred. Many men in these cases try to solve it with dieting or exercise,

but a man’s double chin is often not just a fat issue; it is a complex structural problem involving submental muscles, salivary glands, sagging skin, and even the structure of the jawline.

Why Does Only a Double Chin Remain Even Though I Haven’t Gained Weight? The Real Cause of a Man’s Double Chin image 1 Before surgery, front/side

This case as well involved a male patient who came in worried that although his weight was normal, his double chin made his face look dull and older.

As a result of the diagnosis, localized fat had collected under the chin, and the muscles and salivary glands had also sagged downward, leaving almost no visible boundary between the chin and neck. Deep fat was also developed thickly.

With the goal of not just a simple procedure but “structural improvement,” the following surgical plan was established.

Surgical plan

[Double chin liposuction + muscle tightening

  • salivary gland tightening + skin excision]

Why Does Only a Double Chin Remain Even Though I Haven’t Gained Weight? The Real Cause of a Man’s Double Chin image 2 1 week after surgery, front/side

One week after surgery, there was still swelling, but the fullness under the chin had noticeably decreased, and the boundary between the chin and neck had begun to emerge gradually.

At this stage, residual swelling still means the line is not fully visible, but compared with before surgery, the structural change is clearly noticeable^^

Why Does Only a Double Chin Remain Even Though I Haven’t Gained Weight? The Real Cause of a Man’s Double Chin image 3 1 month after surgery, front/side

One month after surgery, as time passed, much of the swelling had subsided, and the lower face looked more refined.

As the dull impression caused by the double chin improved, a more masculine jawline began to reappear from both the front and side views.

Why Does Only a Double Chin Remain Even Though I Haven’t Gained Weight? The Real Cause of a Man’s Double Chin image 4

Six months after surgery, the boundary between the chin and neck blended naturally, and the mandibular line that had been blurred by the double chin became clearly visible. Without looking overly sharp or artificial, the masculine jawline settled in naturally,

and from the front and side, especially in photos and videos, you could confirm the change in which the lower face looked much more refined.

Why Does Only a Double Chin Remain Even Though I Haven’t Gained Weight? The Real Cause of a Man’s Double Chin image 5 Before/after, front

If you haven’t gained weight but only a double chin remains, the cause is more likely the structure under the chin rather than body weight.

There are limits to an approach that removes fat alone; only by considering the muscles, salivary glands, and jawline together can a more masculine impression be improved.

Why Does Only a Double Chin Remain Even Though I Haven’t Gained Weight? The Real Cause of a Man’s Double Chin image 6 Before/after, 45 degrees

21 Plastic Surgery aims not merely to reduce a man’s double chin, but to organize the structure of the lower face and create a clearer, more trustworthy impression.

Why Does Only a Double Chin Remain Even Though I Haven’t Gained Weight? The Real Cause of a Man’s Double Chin image 7

If you have a double chin that doesn’t improve with exercise or dieting, please check the solution that suits you through an accurate diagnosis. If you have any questions, feel free to contact us for a consultation anytime.

Why Does Only a Double Chin Remain Even Though I Haven’t Gained Weight? The Real Cause of a Man’s Double Chin image 8 Why Does Only a Double Chin Remain Even Though I Haven’t Gained Weight? The Real Cause of a Man’s Double Chin image 9 Why Does Only a Double Chin Remain Even Though I Haven’t Gained Weight? The Real Cause of a Man’s Double Chin image 10 Why Does Only a Double Chin Remain Even Though I Haven’t Gained Weight? The Real Cause of a Man’s Double Chin image 11

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