Psoriasis was linked to liver, lung and substance use problems in 320,220 people
PsoriasisPart of a story we are following · 3 articles · See every update
People with psoriasis had more liver disease, substance misuse and interstitial lung disease than matched people without it, in a UK study comparing 320,220 people with psoriasis with 1,706,424 matched controls, published Oct. 30, 2026, in British Journal of Dermatology. Psoriasis affects more than the skin.
Psoriasis is a common skin condition, but it’s not only about the skin. It’s a chronic inflammatory disease, and guidelines already recommend checking people with psoriasis for problems like heart disease and diabetes.
Psoriasis was linked to many conditions in different organs. Some of the strongest long-term links outside the skin were with liver disease, substance misuse and certain lung diseases.
What did the study look at?
Using UK primary care records linked to hospital data, researchers compared 320,220 people with psoriasis with 1,706,424 people of the same age and sex from the same practices. They checked 225 groups of diagnoses in the first year after the psoriasis diagnosis and afterward, adjusting for alcohol, smoking, body mass index and social deprivation.
What did the study find about psoriasis?
| Condition (long term) | Hazard ratio |
|---|---|
| Liver disease | 1.47 |
| Substance misuse, including alcohol and tobacco | 1.26 |
| Lung diseases affecting the interstitium | 1.33 |
Links appeared across many organ systems. The authors see the results as a map to generate new hypotheses rather than a list of proven effects.
Why does this matter?
People with psoriasis may see a dermatologist but not be checked for problems elsewhere. A broad map of linked conditions can help doctors know what to look for, from liver health to breathing.
How solid is this evidence?
It’s moderate. Mongevity rates it C on our A-to-E scale. The study is very large and adjusted for key factors, but it’s observational, based on recorded diagnoses, and people with psoriasis may simply see doctors more often, which can make some conditions look more common.
What does this mean for you?
If you have psoriasis, ask your doctor about regular checks beyond the skin, such as liver tests, blood pressure, blood sugar and cholesterol. Limiting alcohol and not smoking help both the skin and the rest of the body. Mention any persistent cough or shortness of breath.
How do I explain this at dinner?
Psoriasis shows up as patches on the skin, but it’s linked to inflammation inside the body too. Scientists looked at millions of medical records and found it often travels with problems in the liver and lungs. A good question for the table: why might something on the outside tell us about the inside?
In one sentence: psoriasis was linked to conditions across the body, including liver disease, substance misuse and lung disease, in a large UK study.
Questions and answers
- Is psoriasis only a skin disease?
- No. It's a chronic inflammatory condition linked in this study to problems across many organ systems.
- Which conditions were most linked?
- Long-term links outside the skin included liver disease (hazard ratio 1.47), substance misuse (1.26) and interstitial lung disease (1.33).
- What should people with psoriasis do?
- Ask about regular checks beyond the skin, limit alcohol and avoid smoking.
