title: Effect of sleep position on perceived facial aging.
abstract: OBJECTIVE
  To determine whether there is an association between sleep position and the appearance of facial wrinkles and facial descent.
  
  
  METHODS
  One hundred women were questioned about their sleep position preference. An independent expert observer evaluated frontal images with digital laterality randomization to identify the side with more wrinkles and more ptosis.
  
  
  RESULTS
  Forty-one right-sided sleepers and 23 left-sided sleepers were identified. There was statistical independence between sleep side and side with more wrinkles and between sleep side and side with more facial ptosis according to the Pearson chi-square test.
  
  
  CONCLUSIONS
  Sleep side preference was not significantly correlated with the appearance of wrinkles or facial descent.
authors.affiliation: Shelby Township, Michigan.
authors.forename: Brett S
authors.initials: BS
authors.lastname: Kotlus
mesh_terms: D000328:Adult; D000368:Aged; D003430:Cross-Sectional Studies; D005145:Face; D005260:Female; D006801:Humans; D008875:Middle Aged; D010465:Perception; D011187:Posture; D015595:Skin Aging; D012890:Sleep; D011795:Surveys and Questionnaires; D055815:Young Adult