Coffee consumption was associated with a decreased risk of rosacea, according to the findings of a recent study.
The study included 82,737 women enrolled in the Nurses’ Health Study II who responded to the question regarding a rosacea diagnosis. Every 4 years, data on coffee, tea, soda, and chocolate consumption were collected. Analyses occurred between June 2017 and June 2018.
During follow up, a total of 4945 cases of rosacea were identified.
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The researchers found an inverse association between increased caffeine intake and risk of rosacea after they adjusted for other risk factors (hazard ratio [HR] for highest quintile vs lowest quintile of caffeine intake, 0.76; 95% CI, 0.69-0.84). Additionally, a significant inverse association was found between caffeinated coffee consumption and risk of rosacea (HR for 4 or more servings per day vs less than 1 per month, 0.77; 95% CI, 0.69-0.87). However, this association was not observed for decaffeinated coffee (HR, 0.80; 95% CI, 0.56-0.87).
In addition, caffeine-containing tea, soda, and chocolate were not significantly associated with an increased risk for rosacea.
“Our findings do not support limiting caffeine intake as a means to prevent rosacea,” the researchers concluded. “Further studies are required to explain the mechanisms of action of these associations, to replicate our findings in other populations, and to explore the relationship of caffeine with different rosacea subtypes.”
Li S, Chen ML, Drucker AM, et al. Association of caffeine intake and caffeinated coffee consumption with risk of incident rosacea in women [published online October 17, 2018]. JAMA Dermatol. doi:10.1001/jamadermatol.2018.3301