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Dietary Macronutrients and Sleep.

Glenda Lindseth1, Ashley Murray2

  • 1University of North Dakota, Grand Forks, ND, USA glenda.lindseth@und.edu.

Western Journal of Nursing Research
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Summary
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Dietary fat and carbohydrate intake significantly impact sleep. High carbohydrate diets reduced wake times, while high fat diets improved sleep quality in young adults.

Keywords:
actigraphscarbohydratesfatsproteinssleep

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Area of Science:

  • Nutrition Science
  • Sleep Science
  • Human Physiology

Background:

  • Sleep quality and quantity are crucial for overall health.
  • Dietary patterns are increasingly recognized as a modifiable factor influencing sleep.
  • Understanding the specific effects of macronutrients on sleep is essential for public health recommendations.

Purpose of the Study:

  • To investigate the impact of high protein, carbohydrate, and fat diets on sleep quantity and quality in young adults.
  • To analyze differences in sleep parameters and serum lipids across various macronutrient diets.
  • To determine the relationship between specific macronutrient intakes and objective/subjective sleep measures.

Main Methods:

  • A repeated-measures, randomized crossover study design was employed with 36 young adult participants.
  • Participants consumed controlled high protein, high carbohydrate, high fat, and control diets.
  • Sleep was monitored using actigraphy, and sleep quality was assessed using the Global Pittsburgh Sleep Quality Index©.

Main Results:

  • Significant differences in wake times and wake minutes after sleep onset were observed between macronutrient diets and the control diet.
  • High carbohydrate intake was associated with significantly shorter wake times (p < .001).
  • High fat intake was linked to significantly better sleep quality as measured by the Global Pittsburgh Sleep Quality Index© (p < .05).

Conclusions:

  • Dietary macronutrient composition significantly influences sleep patterns and quality.
  • Specific macronutrients, such as carbohydrates and fats, have distinct effects on sleep architecture and subjective sleep experience.
  • Dietary interventions represent a potential strategy for improving sleep in young adults.