Nutritional factors affect the skin, but little information is available on the modulating effects of physiologic concentrations of nutrients on skin condition.
In this study, researchers from the Netherlands evaluated whether nutrient concentrations in serum and diet are associated with skin condition.
The team conducted a cross-sectional study on 302 healthy men and women. They collected data on serum concentrations of nutrients, dietary intake of nutrients, and the hydration, sebum content, and surface pH of skin.
They measured skin condition using noninvasive techniques.
|Monounsaturated fat intake associated with skin surface pH.|
|American Journal of Clinical Nutrition|
In addition, the subjects' dietary intake was assessed using 2 complementary food-frequency questionnaires.
The research team used multiple regression analysis to evaluate associations of serum vitamins and carotenoids, and of dietary micro- and macro-nutrients with skin condition.
They found that, after adjustment for potential confounders, there were significant associations between serum vitamin A, skin sebum content and surface pH.
There were also significant associations between the dietary intake of total fat, saturated fat, monounsaturated fat, and skin hydration.
The team determined that monounsaturated fat intake was also associated with surface pH.
However, further associations between serum beta-cryptoxanthin and skin hydration, and between surface pH, fluid, and calcium intakes were observed in men only.
Dr Esther Boelsma's team concluded, "Several associations between nutrients in serum and diet and skin condition were observed, indicating that changes in baseline nutritional status may affect skin condition".