Are Skin Tags Fat-Related? What the Evidence Actually Says

TL;DR

• Skin tags are more common in people carrying excess weight, so there is a real link, but fat is one factor among several rather than the whole story.
• The main drivers are friction where skin rubs on skin, higher insulin levels, hormonal changes, age and genetics.
• Because severe insulin resistance is tied to more skin tags, a sudden crop can occasionally be a prompt to check your blood sugar with a GP.
• Losing weight and improving metabolic health may reduce how many new tags form, but it will not usually make existing ones drop off.
• Skin tags are harmless, and safe removal at CoLaz is a cosmetic choice made after an in-person assessment, never a DIY job at home.

Yes, skin tags are linked to body fat, but the connection is more layered than fat alone. People who carry excess weight do get more skin tags, yet the reason is a mix of friction, blood-sugar changes and hormones rather than fat sitting under the skin. If you have noticed a few soft little growths on your neck or under your arms and wondered what they say about your health, this guide walks through what the research actually shows, and where the popular idea gets it wrong.

Are skin tags fat-related?

Skin tags are related to body fat, but only partly, and having them does not mean something is wrong with you. The NHS notes that you are more likely to get skin tags if you are living with obesity or have skin folds that rub together, so weight is one genuine risk factor.

The important word is risk. Plenty of people at a healthy weight get skin tags too, and plenty of people carrying extra weight never get a single one. Skin tags, known medically as acrochordons, are soft, harmless flaps of loose collagen and blood vessels wrapped in skin. According to StatPearls, their frequency rises with age, obesity and metabolic syndrome, which tells us fat is part of a wider picture that also includes how your body handles sugar and hormones. So the honest answer is that body fat raises the odds, but it is not the single cause.

What actually causes a skin tag to form?

A skin tag forms when the top layers of skin grow a little too much in one spot, usually where the skin is warm, folded or under friction. Several things can nudge that overgrowth along, which is why fat, blood sugar and hormones all show up in the research.

The Cleveland Clinic explains that skin tags most often appear on the neck, armpits, groin, eyelids and under the breasts, which are precisely the areas where skin meets skin. The exact trigger is not always known, but the pattern across studies points to a handful of overlapping factors. The five that come up most often are friction, insulin, hormones, age and genetics, and they frequently work together rather than alone. Here is how each one contributes.

Factor 1: Do skin folds and friction cause skin tags?

Friction is one of the most consistent triggers, and it is the clearest way that carrying extra weight leads to more skin tags. Where skin repeatedly rubs against skin or clothing, the constant low-level irritation seems to encourage cells to overgrow into a tag.

This is why skin tags cluster in the neck creases, underarms, groin and under the bust. More body fat tends to mean more and deeper skin folds, which means more surfaces rubbing together through the day. It also explains why skin tags are common in areas that see a lot of movement, and why they can appear in people who are not overweight at all but have close-fitting collars, straps or jewellery causing steady friction. Friction on its own is enough to start a tag, so it is often the first factor to consider before any talk of metabolism.

Factor 2: How does insulin resistance affect skin tags?

Higher insulin levels are strongly linked to skin tags, and this is one of the most studied parts of the whole topic. When the body becomes resistant to insulin, it produces more of it, and that excess can act as a growth signal to the skin.

The mechanism is thought to run through growth factors. An insulin resistance review and the skin describes how raised insulin can switch on insulin-like growth factor pathways that drive keratinocytes and fibroblasts to multiply, which is the kind of overgrowth a skin tag is made of. Research looking specifically at growth factor research in acrochordons supports the same idea. This matters because insulin resistance often travels with excess weight, so some of what looks like a fat effect is really a blood-sugar effect. A clinical acrochordon study found people with skin tags had a meaningfully higher chance of diabetes than those without, which is why clinicians take multiple new tags seriously rather than dismissing them.

Factor 3: Do hormones and growth factors play a part?

Hormones do influence skin tags, which is why they often appear in pregnancy and in conditions that shift the body’s hormone balance. Fat tissue is not passive padding: it is active tissue that releases hormones and signalling chemicals that can affect the skin.

The NHS lists pregnancy as a risk factor, noting that hormonal changes are thought to encourage skin tag growth. Fat cells also release hormones such as leptin, and while some researchers have looked at whether raised leptin drives skin tags, the evidence on leptin itself is mixed, with some studies finding no clear difference between people with and without tags. What is more consistent is the broader metabolic link: a case-control study found skin tags were associated with several features of metabolic syndrome, including altered cholesterol and blood pressure. So hormones are part of the story, but the neat claim that one fat hormone causes skin tags is not something the research firmly backs.

Factor 4: How much do age and genetics matter?

Age and family history are two factors you cannot change, and both raise your chances independently of weight. Skin tags become more common as we get older, and they often run in families.

If your parents had them, you are more likely to develop them too, which suggests a genetic tendency in how the skin behaves. This is worth remembering if you are slim, eat well and still find yourself with a few tags: it does not automatically point to a weight or blood-sugar problem. Age-related changes in the skin, combined with years of small daily frictions, are enough on their own. Genetics and age help explain why skin tags are so widespread across the whole population, not only in people carrying extra weight.

Factor 5: Can multiple skin tags signal a health issue?

A sudden crop of skin tags can occasionally be a useful early flag, mainly for blood-sugar problems, so it is worth a mention to your GP. On their own, skin tags are harmless, but a fast increase in number is a pattern clinicians pay attention to.

Because severe insulin resistance is thought to cause more skin tags to grow, a rapid rise can prompt a simple check for type 2 diabetes, especially alongside other signs such as increased thirst or tiredness. A study of metabolic parameters in people with multiple skin tags found higher rates of dyslipidaemia, metabolic syndrome and insulin resistance than in the general population, and a bariatric cohort study of adults with severe obesity found skin tags tracked with vascular risk factors. This does not mean a skin tag is a diagnosis. It means that if you notice many appearing quickly, it is sensible to see your GP for a routine metabolic check rather than to worry about the tags themselves.

Can losing weight get rid of skin tags?

Losing weight may lower how many new skin tags you form, but it will not usually clear the ones you already have. Weight loss reduces friction and helps your body handle insulin better, which addresses two of the main triggers, so fewer new tags is a realistic hope.

Existing tags are a different matter. Once a skin tag has formed, it is settled tissue and rarely falls off just because your weight or blood sugar improves. Improving your metabolic health is still very much worth doing for your overall wellbeing, and it may slow the rate at which new tags appear, but it is not a removal method. If a tag bothers you, catches on clothing or you simply do not like how it looks, the reliable way to be rid of it is a proper in-clinic removal rather than waiting for it to disappear.

How are skin tags removed safely?

Skin tags are removed in a clinic using a quick, controlled method that lifts the tag away and settles the base, chosen to suit its size and location. The NHS does not remove skin tags because it treats them as cosmetic, so removal is a private procedure, and it should always be done by a trained professional.

The methods used include cryotherapy, which freezes the tag, radio-frequency, which uses heat energy, and fine electrolysis for smaller tags. At CoLaz, our skin tag removal is priced per tag and confirmed after an assessment, because the right approach for a single small tag on the eyelid is different from a cluster in the underarm. The one thing to avoid is doing it yourself. The NHS warns against home removal because of the risk of bleeding, infection and scarring, and a tag should only ever be removed after a clinician has confirmed it is a harmless skin tag and not something that needs checking first.

How does CoLaz approach skin tags?

At CoLaz, every skin tag is looked at in person before anything is removed, so we can confirm it is harmless and choose the gentlest suitable method. We treat removal as a small, considered procedure rather than a rushed one, with your comfort and the look of the healed skin coming first.

If you have skin tags you would like assessed, whether it is one that keeps catching or a group you would rather not have, a free consultation is the place to start. We will check the area, explain the realistic options and costs, and point you to your nearest of our UK clinics so you can plan a visit that fits around you.