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Why Do I Have a Double Chin Even Though I’m Skinny?

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Dr. Hardik Soni

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Why Do I Have a Double Chin Even Though I’m Skinny?

Having a double chin can be a source of insecurity for many people, especially those who consider themselves to be at a healthy weight or even skinny. 

While excess weight is one of the most common causes of submental fat buildup, genetics, aging, posture, and other factors can all play a role even for slimmer individuals. 

In this comprehensive guide, Dr. Soni will share the various reasons behind double chin formation and natural or medical treatments that may help reduce stubborn chin fat.

Here’s Why You Have a Double Chin Even When You’re Skinny

Having a double chin even when you’re skinny is mainly due to your genetic predisposition to store excess fat specifically in the area around the jawline. 

According to Dr. Soni, this occurrence is quite typical, yet it poses a difficulty since reducing fat in the chin region through diet and exercise alone proves to be more challenging.

Factors Influencing Chin Shape and Size

Factors Influencing Chin Shape and SizeResearch Insights and Authors
Soft Tissue ContributionUnderstanding the role of soft tissue and skin thickness is critical for predicting chin incongruity. B. Michelow, B. Guyuron, 1995
Facial AsymmetryThe chin may appear weaker on one side than the other, which should be considered in chin augmentation. S. Aston, Darren M. Smith, 2015
Sex and AncestryThese factors significantly affect chin morphologies. H. Garvin, C. Ruff, 2012
Mandibular SpaceThe size of the available mandibular space and anterior teeth can influence chin-associated features. Hitoshi Fukase et al., 2015
Aesthetic BalanceThe balance between the chin and the lower face is essential for an aesthetically pleasing appearance. T. Lee et al., 2014
Fat GraftingThis method can improve chin volumes and sagittal projections. F. Basile, A. Basile, 2017

Causes of Double Chin in Skinny People

double chin in a skinny woman


Dr. Soni explains that genetics play a significant role in the accumulation of fat under the chin. If close family members struggled with submental fullness, there’s a good chance genetics are contributing to yours as well.

How To Reduce Double Chin With a Family History of Chin Fat?

Dr. Soni recommends focusing on strength training to support your posture and a diet high in collagen, which can help slow the development of excess subcutaneous fat under the chin.

Collagen promotes skin elasticity and firmness. This can help minimize chin fat by preventing sagging skin, which can contribute to the appearance of a double chin.


As we get older, levels of collagen and elastin in skin naturally decline due to oxidative stress and other age-related changes. Over decades, this loss of tissue integrity causes skin to become looser and less able to snap back into shape. 

The jawline and neck are especially vulnerable, which is why drooping jowls and double chins often emerge with advancing years.

Poor Posture

Spending large amounts of time each day hunched over phones, computers, or other devices takes a toll on neck and back muscles. 

Weakened muscles around the jaw and cervical spine are less able to support overlying skin, leading to premature sagging and fullness below the chin.

Hormonal Imbalances

Conditions causing hormonal fluctuations, such as thyroid issues, menopause, or polycystic ovary syndrome (PCOS), may disrupt the body’s natural fat distribution patterns and lead to excess weight gain in the mandible area. 

Often, excess hormone levels signal the body to deposit fat in subcutaneous trouble zones like the chin even at a healthy weight.

Can Hormones Lead to a Double Chin Despite a Healthy Weight?

According to Dr. Soni, endocrine disorders, such as thyroid imbalances, can disrupt fat distribution, possibly causing the body to redistribute weight to areas like the chin, even when maintaining an overall slim physique.

“Skinny Fat” Physique

Some individuals confuse their low weight with true leanness. Despite not weighing much, inadequate muscle mass paired with high body fat percentage means problem areas like submental fat can still emerge. 

Effectively addressing a double chin often requires body composition optimization in addition to weight management.

Can You Be Thin Yet Have Excess Body Fat Leading to a Double Chin?

Even at a low weight, insufficient muscle mass paired with a high percentage of body fat can leave pockets of subcutaneous adipose tissue vulnerable to developing in the neck. Targeted nutrition and exercise help optimize composition.

Factors Within Personal Control

Fresh organic fruits and vegetables on wooden background

While heredity, hormones, and aging are out of an individual’s direct control, certain lifestyle habits greatly impact submental fat levels and may exacerbate an existing double chin issue.

Dr. Soni mentions that addressing aspects like diet quality, exercise patterns, and posture are important foundations for reducing chin fat.


To assist fat loss in stubborn areas, focus on whole, minimally processed foods that support healthy metabolic functioning. Limit sugar, refined carbs, and excess calories that can dysregulate hunger hormones and promote added fat storage.

Anti-inflammatory nutrients from vegetables, fruits, whole grains, fish, and nuts supply building blocks for skin elasticity as well.

What foods should I focus on or avoid to help reduce my double chin? 

A balanced diet high in collagen-rich foods helps supply the building blocks for firm skin, while limiting sugary snacks and refined grains safeguards against triggers that disrupt hormones influencing fat storage. 


While spot reduction of submental fat is impossible, maintaining an active lifestyle preserves calorie burn at rest and promotes bodywide fat loss over time through optimizing metabolism and building skeletal muscle. 

Dr. Soni suggests doing postural exercises and stretches can also help address underlying muscle imbalances linked to double chin formation.


Consciously improving posture through regular stretching, strengthening, and movement increases circulation to neck muscles. Better alignment safeguards against accelerated skin aging from poor positioning throughout the day. Simple cues like thinking “tall” when sitting or standing and periodic postural checks make a difference.

What is the connection between posture and getting a double chin? 

Poor spinal posture can weaken skeletal neck muscles over time, reducing their ability to support overlying skin and influence fat deposition. Consistent slouching may exacerbate loose skin that contributes to the appearance of a double chin.

Nonsurgical Solutions for Stubborn Chin Fat

injections for double chin

While diet and lifestyle changes aim to prevent future fat gain, permanent elimination of existing submental fat deposits often requires supplementary nonsurgical approaches.

Dr. Soni advises that for those unwilling or unable to pursue surgery, minimally invasive treatments offer worthwhile options. Always consult a board-certified provider before undergoing any medical aesthetic procedures.


Coolsculpting utilizes controlled cooling to induce adipocyte apoptosis or “fat cell death” in treated areas. Specifically targeting the submental zone, this noninvasive procedure achieves noticeable jawline contouring results with minimal discomfort or downtime.

Kybella Injections

Kybella injections work by breaking down fats cells beneath the chin through membrane disruption and eventual metabolic breakdown, causing damaged cells to be eliminated from the body over several weeks. 

Over 10-12 weeks, the body naturally eliminates lysed fat cells for long-lasting contour improvement. Results are best achieved with a series of treatments scheduled 4-6 weeks apart.

Radiofrequency Treatments

ThermiSmooth or ThermiTight harnesses radiofrequency-induced heat to induce collagen regeneration and selective fat destruction deep within the submental triangle. Thermal regeneration of collagen fibers simultaneously lifts and tightens skin over time.

Surgical Options for Excess Skin or Fat

For those with severe fullness, sagging skin, or medical issues limiting success with nonsurgical options, plastic surgery may provide superior contouring results. Common chin procedures include:

LiposuctionSuction-assisted removal of excess submental fat
Neck LiftRemoves loose skin from the lower face and neck, tightening underlying muscles
Submental PlatysmaplastyTightens and repositions neck platysma muscles, often performed with liposuction

As always, consult board-certified facial plastic surgeons in your area for surgical candidacy evaluations, cost estimations, and anticipated outcomes.

Maintaining Hard-Earned Results

Whether addressing a double chin through dietary changes, minimally invasive procedures, or surgery, long-term success depends on continuing healthy habits. Regular exercise, stress management, adequate sleep, and mindful posture prevent risk factors from recurring. 

Additionally, annual check-ins with providers monitor ongoing skin laxity or fat redistribution. With commitment to lifestyle adjustments, many achievable double chin solutions yield permanent yet natural-looking results.

Frequently Asked Questions About Double Chin

What is Kybella and how does it work to get rid of a double chin? 

Kybella injections introduce deoxycholic acid which works to break down adipose tissue, specifically targeting stubborn fat cells in the neck that refuse to dissolve. The acid disrupts these cells so they can be dissolved and filtered from the body, reducing chin fat over weeks.  

How do CoolSculpting and Kybella work to get rid of fat if they don’t remove it surgically? 

CoolSculpting and Kybella treatments rely on stimulated lymphatic movement to carry away and filter damaged fat cells. Coolsculpting induces apoptosis, and Kybella’s acid injection damages membrane integrity so cells can be transported and metabolized rather than accumulating in stubborn areas like the neck.

What side effects can happen after Kybella injections and how long do they last? 

Kybella injections typically cause temporary pain, swelling and numbness as the deoxycholic acid enters adipocytes and triggers a localized inflammatory response. With resolution aided by ice, most discomfort subsides within days of the procedure.

What factors would make someone a better candidate for surgery instead of nonsurgical treatments for their double chin? 

Individuals with significant excess skin or fatty tissue demonstrated by medical evidence may achieve superior contouring results from laser liposuction surgery compared to more conservative remedies like Kybella which are less able to tighten lax underlying structures.

Expert Recommendations for Long-Term Jawline Contouring

In conclusion, Dr. Soni, a leading expert in the field, emphasizes the importance of addressing modifiable risk areas through diet, exercise, and professionally administered procedures or surgery to optimize long-term jawline contouring and overall self-confidence.

Dr. Hardik Soni

MD, Founder/Lead Physician

About Dr. Hardik Soni

Dr. Hardik Soni is the founder and Medical Director of Ethos Aesthetics + Wellness. His primary focus is on minimally invasive and non-invasive cosmetic procedures including botulinum injection (Botox and Dysport), dermal fillers (Juvederm, Restylane, Radiesse), laser hair removal, chemical peels, and laser skin rejuvenation. Dr. Soni believes in a more conservative approach and his first goal is education. Clients are able to determine the ideal treatments after discussion with Dr. Soni regarding the expected outcomes, cost, as well as risks.

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