Dietary Nutrient Intakes and Skin-Aging Appearance Among Middle-Aged American Women

Am J Clin Nutr. 2007 Oct;86(4):1225-31. doi: 10.1093/ajcn/86.4.1225.

Abstract

Background: Nutritional factors play a key role in normal dermatologic functioning. However, little is known about the effects of diet on skin-aging appearance.

Objective: We evaluated the associations between nutrient intakes and skin-aging appearance.

Design: Using data from the first National Health and Nutrition Examination Survey, we examined associations between nutrient intakes and skin aging in 4025 women (40-74 y). Nutrients were estimated from a 24-h recall. Clinical examinations of the skin were conducted by dermatologists. Skin-aging appearance was defined as having a wrinkled appearance, senile dryness, and skin atrophy.

Results: Higher vitamin C intakes were associated with a lower likelihood of a wrinkled appearance [odds ratio (OR) 0.89; 95% CI: 0.82, 0.96] and senile dryness (OR: 0.93; 95% CI: 0.87, 0.99). Higher linoleic acid intakes were associated with a lower likelihood of senile dryness (OR: 0.75; 95% CI: 0.64, 0.88) and skin atrophy (OR: 0.78; 95% CI 0.65, 0.95). A 17-g increase in fat and a 50-g increase in carbohydrate intakes increased the likelihood of a wrinkled appearance (OR: 1.28 and 1.36, respectively) and skin atrophy (OR: 1.37 and 1.33, respectively). These associations were independent of age, race, education, sunlight exposure, income, menopausal status, body mass index, supplement use, physical activity, and energy intake.

Conclusions: Higher intakes of vitamin C and linoleic acid and lower intakes of fats and carbohydrates are associated with better skin-aging appearance. Promoting healthy dietary behaviors may have additional benefit for skin appearance in addition to other health outcomes in the population.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Aging / drug effects
  • Aging / physiology*
  • Ascorbic Acid / administration & dosage*
  • Cohort Studies
  • Confidence Intervals
  • Cross-Sectional Studies
  • Diet*
  • Female
  • Health Behavior
  • Health Surveys
  • Humans
  • Likelihood Functions
  • Linoleic Acid / administration & dosage*
  • Mental Recall
  • Middle Aged
  • Nutrition Surveys
  • Odds Ratio
  • Skin / drug effects
  • Skin / pathology*
  • Skin Aging / drug effects*
  • Skin Aging / pathology
  • Skin Aging / physiology
  • United States

Substances

  • Linoleic Acid
  • Ascorbic Acid