The Korean Journal of Food And Nutrition (한국식품영양학회지)

The Korean Society of Food and Nutrition (한국식품영양학회)
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A Study on the Relationship of Skin Surface pH with Nutrient Intake or Dietary Pattern in Healthy Adults

건강한 성인에서 피부 산도와 영양소 섭취 및 식사패턴과의 상관성 연구

  • Kang, Hye-Jin (Dept. of Medical Nutrition, Graduate School of East-West Medical Science, Kyung Hee University) ;
  • Kim, Kun-Pyo (Dept. of Medical Nutrition, Graduate School of East-West Medical Science, Kyung Hee University) ;
  • Cho, Yunhi (Dept. of Medical Nutrition, Graduate School of East-West Medical Science, Kyung Hee University)
  • 강혜진 (경희대학교 동서의학대학원 의학영양학과) ;
  • 김건표 (경희대학교 동서의학대학원 의학영양학과) ;
  • 조윤희 (경희대학교 동서의학대학원 의학영양학과)
  • Received : 2016.09.19
  • Accepted : 2016.12.26
  • Published : 2017.02.28
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Abstract

As an indicator of skin health, acidified skin surface pH ranging from 5 to 7 is crucial for maintaining skin barrier. In this study, we evaluated the relationship between skin pH and dietary pattern (DP) as well as nutrient or food intake in 48 healthy middle aged adults. Skin pH was measured in the skin surface of the inner arm, and blood lipid profile was analyzed. Dietary intake data were obtained using 1 day 24 hour recall method, and DP was extracted using factor analysis. Results revealed that skin pH ranged from 5.15 to 6.88 in all subjects. There was no significant difference in skin pH between males and females. When subjects were grouped by tertile of skin pH, the food intake of fruit, and the nutrient intake of omega 6 fatty acid, potassium, vitamin A, vitamin C, ${\beta}$-carotene, and riboflavin in the first tertile group with skin pH ranging from 5.15 to 5.68 were significantly higher than in the third tertile group with skin pH ranging from 6.26 to 6.88. There was no difference in blood lipid profile between the first and the third tertile group. Among 5 DP extracted by factor analysis, DP5 characterized by a high intake of nuts and fruits as well as a low intake of beverages and alcohol was inversely correlated with skin pH after adjusting for gender and age. DP5 was positively correlated with nutrient intake of carbohydrate, fiber, potassium, iron, vitamin A, vitamin C, ${\beta}$-carotene, thiamine, and riboflavin but negatively correlated with sodium after adjusting for gender, age, smoking, and energy intake. Therefore, acidified skin pH could be maintained by these DP and nutrients.

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References

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