Ben Wang, Bingbing Yan, Zhixiang Zhao, Yan Tang, Ying-xue Huang, Dan Jian, Wei Shi, Hongfu Xie, Yaling Wang, Ji Li
DOI: 10.2340/00015555-3849

The exact mechanisms of rosacea development are unknown, but it has been suggested that tea consumption may be associated with its development. To determine the relationship between tea drinking behaviour and rosacea, this clinical case-control study recruited 2,063 participants, who completed a questionnaire about tea drinking behaviour. A 1:1 ratio propensity score matching method was used to generate 619 cases and 619 controls. High-frequency tea drinking (3 times/day: adjusted odds ratio (aOR) 2.592; 95% confidence interval (95% CI) 1.225–5.485; ≥ 4 times/day; aOR 8.86; 95% CI 3.43–22.887), non-fermented tea (aOR 2.172; 95% CI 1.562–3.022), and hot tea (aOR 2.793; 95% CI 1.796–1.344) were associated with an increased risk of rosacea. Further results showed that these tea drinking behaviours were significantly associated with an increased risk of flushing (aOR 1.41; 95% CI 1.07–1.87) and erythema (aOR 1.48; 95% CI 1.10–2.00). Tea drinking behaviour is closely related to rosacea and

Tea is a very popular drink among the Chinese population, but the relationship between tea consumption and rosacea remains unclear. This clinical case-control study selected a propensity score matched population of 619 cases and 619 controls by matching demographic characteristics. The type of tea consumed (non-fermented tea), frequency of tea consumption per day (≥3 times/day), and drinking temperature (hot tea) were related to rosacea. Tea drinking behaviour was found to be closely related to rosacea and mainly affected flushing and erythema. Therefore, we recommend that patients with rosacea should reduce the frequency of tea drinking per day, particularly hot tea, but can continue their tea drinking habits in the long term.

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