A new study by researchers at King’s College London has uncovered an important link between where body fat is stored and the risk of developing psoriasis — a chronic skin condition marked by red, scaly patches. While it’s long been known that obesity raises the risk of psoriasis, this study zooms in on fat around the abdomen, showing that it may be a more critical risk factor than total body fat, especially for women.Here’s what the findings mean for your health, and how they might change the way we understand and approach psoriasis.What Did The Study Find?Psoriasis is an inflammatory condition that affects the skin but is deeply connected to the immune system. It's not just cosmetic — it can cause severe discomfort, emotional distress, and is linked to other health issues such as arthritis, cardiovascular disease, and diabetes.Although it’s clear that carrying excess weight can make psoriasis worse or more likely, researchers now say that where you carry that weight is even more important.Waistline WarningThe research, published in the Journal of Investigative Dermatology, analysed data from more than 330,000 people in the UK Biobank, including over 9,000 people with psoriasis. Using both traditional body measurements (like BMI) and advanced imaging, the team evaluated 25 different ways of assessing body fat.Their standout finding? Fat stored centrally — especially around the waist — showed a much stronger link to psoriasis than general body fat. This was particularly true for women.“Our research shows that where fat is stored in the body matters when it comes to psoriasis risk,” said Dr. Ravi Ramessur, lead investigator of the study. “Central fat seems to play a key role.”It's Not All in Your GenesAnother key takeaway from the study is that this risk holds true regardless of genetic makeup. In other words, even if someone doesn't carry gene variants commonly associated with psoriasis — like HLA-C06:02 — they may still be at higher risk if they have excess abdominal fat.This suggests that central body fat is not just a co-factor but may be a causal factor in psoriasis development."Even those with a lower overall fat percentage can have a higher risk if abdominal fat is present," said Professor Michael Simpson, co-author and genetics expert.What It Means for Prevention and CareAs global obesity rates rise, so does the need for personalized and proactive strategies. The study’s authors suggest that waist circumference should be more actively measured in clinical settings, especially when assessing psoriasis risk.Rather than focusing only on overall weight or BMI, paying attention to central fat could help doctors predict who’s more likely to develop psoriasis or have more severe symptoms.“Healthy weight management should be part of psoriasis care, with a focus on reducing central obesity,” said Professor Catherine Smith, senior author of the study.Limitations The researchers note that their findings are based on individuals of White British ancestry, meaning the results may not apply across all ethnic groups. More research involving diverse populations and dermatologist-confirmed diagnoses will help confirm and broaden the impact of these findings.This study shines a light on a previously under-recognised link between abdominal fat and psoriasis. It urges a shift from focusing solely on total body weight to where that weight is stored. If you or someone you know is managing psoriasis or at risk of developing it, keeping an eye on waist size may be just as important as stepping on the scale.