Background and objectives: The incidence of atopic dermatitis (AD) is continuously increasing in industrialized countries, possibly due to dietary and lifestyle changes. However, the association between processed food intake and AD has not been studied in a large adult population.
Methods and study design: We investigated the association between dietary habits and AD in 17,497 adults in the 2009-2011 Korean National Health and Nutrition Examination Survey (KNHANES).
Results: We identified 4 dietary patterns using principal components analysis of a 63-item food frequency questionnaire: the "traditional dietary pattern", rich in rice and kimchi; the "processed food pattern", with more meat, instant noodles, soda, and processed foods; the "healthy dietary pattern", high in grains, vegetables, fruits, and seaweeds; and the "drinking dietary pattern", mainly drinking coffee and alcohol. Adjusted odds ratios (ORs) for AD were calculated according to dietary patterns after adjusting for potential confounders with incorporation of sample weights for the complex sample design. The "meat and processed food" pattern was associated with a significant 1.57 fold higher OR for atopic dermatitis than the low consumption group. Further analysis revealed that the increased atopic dermatitis was most closely associated with instant noodles. In contrast, the groups with high intake of rice and kimchi exhibited lower ORs, 0.38 and 0.43 folds, compared to the low intake group.
Conclusion: Consuming instant noodles, meat and processed foods was associated with increased prevalence of atopic dermatitis, whereas consuming rice and kimchi, and coffee was associated with decreased prevalence of atopic dermatitis.
背景与目的：特应性皮炎的发生率在工业化国家持续增加，可能是由于饮食 和生活方式的改变。然而，加工食品与特应性皮炎的关系还没有在大人群中研 究过。方法与研究设计：我们研究了2009-2011 年韩国全国健康和营养调查中 17,497 名成年人饮食习惯与特应性皮炎的关系。结果：我们采用主成分法分析 了含有63 个条目的食物频率问卷，确定了4 个膳食模式：“传统膳食模式”： 富含大米和泡菜；“加工食品模式”：更多的肉、方便面、饮料、加工食品； “健康膳食模式”：高谷物、蔬菜、水果和海藻；“饮用膳食模式”：主要饮用咖 啡和酒精。校正掺入复杂样本设计的样本权重等潜在混杂因素，根据膳食模式 计算校正的比值比（ORs）。“肉和加工食品”模式高摄入组比低摄入组特应性 皮炎的OR 值高1.57 倍。进一步分析显示：特应性皮炎的增加与方便面关系 最密切。相反，大米和泡菜高摄入组与低摄入组相比，OR 值较低，分别为 0.38 和0.43。结论：方便面、肉类和加工食品的摄入与特应性皮炎的患病率增 加有关，而大米、泡菜和咖啡的摄入与特应性皮炎的患病率降低有关。.