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December 2018

One More Reason to Continue Drinking Coffee—It May Be Good for Your Skin

Author Affiliations
  • 1Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia
  • 2Program for Clinical Research, Department of Dermatology, University of California, San Francisco, San Francisco
JAMA Dermatol. 2018;154(12):1385-1386. doi:10.1001/jamadermatol.2018.3300

Who does not love a study that validates one of life’s habitual pleasures? Whether it is an iced latte, a double espresso, or simply a hot cup of brown liquid in the hospital cafeteria, many of us in medicine have an emotional attachment as well as a physiologic dependence on coffee.

In their article published in this issue of JAMA Dermatology, Li et al1 report an inverse association between caffeine intake, particularly from coffee, and risk of incident rosacea. In this longitudinal cohort study of more than 82 000 participants with more than 1.1 million person-years of follow up, higher caffeine intake was associated with lower rosacea risk after adjustment for several confounders. Overall, participants who drank 4 cups of coffee per day were less likely to develop rosacea compared with participants who did not drink coffee. A dose-response association was found for both increasing caffeine and coffee intake. The authors hypothesized that caffeine’s vasoconstrictive and immune suppressive effects might decrease the risk of rosacea.