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Teens Who Sleep Less Eat More
Research News
Teens Who Sleep Less Eat More
Teens who slept less than 8 hours per weeknight ate higher proportions of fatty foods and snacks than adolescents who slept 8 hours or more, new research suggests. The results suggest that short sleep duration may increase obesity risk by causing small changes in eating patterns that cumulatively alter energy balance, especially in girls.
Results show that a shorter mean weekday sleep duration was significantly associated with an increase in the percentage of calories consumed from fats and a decrease in the percentage of calories from carbohydrates. After adjusting for potential confounders such as age, sex, and race, teens who slept less than 8 hours on weeknights consumed 2.2% more calories from fats and 3.0% fewer calories from carbs than teens who slept 8 hours or more. Further adjustments for body mass index (BMI) had little effect on these associations. In secondary analyses stratified by sex, the results were significant among girls but not boys.
"The relative increase in fat consumption among shorter sleepers by 2.2% per day chronically may contribute to cumulative increases in energy consumption that would be expected to increase risk for obesity and cardiovascular disease," said senior author and principal investigator Susan Redline, MD, MPH, professor of medicine in the Division of Sleep Medicine at Brigham and Women's Hospital and Beth Israel Deaconess Medical Center, teaching affiliates of Harvard Medical School in Boston. "The demonstration of chronically altered dietary patterns in adolescents with shorter sleep provides insight into why shorter sleep has been associated with obesity in prior experimental and observational studies."
The study, published in the September 1 issue of the journal Sleep, also found a relationship between sleep duration and snacking. For each 1-hour increase in sleep duration, the odds of consuming a high amount of calories from snacks decreased by an average of 21%. Analyses of sleep duration and timing of nutrient intake revealed that a significantly greater proportion of teens who slept less than 8 hours per weeknight consumed food in the early morning between 5 AM and 7 AM.
Teens Who Sleep Less Eat More
Teens who slept less than 8 hours per weeknight ate higher proportions of fatty foods and snacks than adolescents who slept 8 hours or more, new research suggests. The results suggest that short sleep duration may increase obesity risk by causing small changes in eating patterns that cumulatively alter energy balance, especially in girls.
Results show that a shorter mean weekday sleep duration was significantly associated with an increase in the percentage of calories consumed from fats and a decrease in the percentage of calories from carbohydrates. After adjusting for potential confounders such as age, sex, and race, teens who slept less than 8 hours on weeknights consumed 2.2% more calories from fats and 3.0% fewer calories from carbs than teens who slept 8 hours or more. Further adjustments for body mass index (BMI) had little effect on these associations. In secondary analyses stratified by sex, the results were significant among girls but not boys.
"The relative increase in fat consumption among shorter sleepers by 2.2% per day chronically may contribute to cumulative increases in energy consumption that would be expected to increase risk for obesity and cardiovascular disease," said senior author and principal investigator Susan Redline, MD, MPH, professor of medicine in the Division of Sleep Medicine at Brigham and Women's Hospital and Beth Israel Deaconess Medical Center, teaching affiliates of Harvard Medical School in Boston. "The demonstration of chronically altered dietary patterns in adolescents with shorter sleep provides insight into why shorter sleep has been associated with obesity in prior experimental and observational studies."
The study, published in the September 1 issue of the journal Sleep, also found a relationship between sleep duration and snacking. For each 1-hour increase in sleep duration, the odds of consuming a high amount of calories from snacks decreased by an average of 21%. Analyses of sleep duration and timing of nutrient intake revealed that a significantly greater proportion of teens who slept less than 8 hours per weeknight consumed food in the early morning between 5 AM and 7 AM.
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