Does Weight Loss Reduce the Severity and Incidence of Psoriasis or Psoriatic Arthritis?

A Critically Appraised Topic

S.K. Mahil; S.M. McSweeney; E. Kloczko; B. McGowan; J.N. Barker; C.H. Smith


The British Journal of Dermatology. 2019;181(5):946-953. 

In This Article

Clinical Message

  • Weight loss following lifestyle interventions (diet and physical activity) produces small but significant improvements in psoriasis and PsA in obese individuals.

  • Despite bariatric surgery being the most effective weight loss intervention, there is a paucity of data on its role of in the management of psoriasis and PsA.

  • Weight loss following bariatric surgery, and in particular gastric bypass surgery, can prevent the development of psoriasis in obese individuals.

  • Clinicians are encouraged to screen proactively for obesity in individuals with psoriasis and offer access to lifestyle, pharmacological and surgical weight loss interventions alongside conventional skin-focused treatments.