-- Robert Preidt
FRIDAY, May 10 (HealthDay News) -- The food you eat may affect
your level of sleepiness or alertness during the day, according to
a new, small study.
Researchers assessed the daytime sleepiness/alertness levels of
31 healthy, non-obese people, aged 18 to 65, who were normal
sleepers. Then they looked at the meals they ate.
Higher fat consumption was associated with increased daytime
sleepiness while higher carbohydrate intake was linked with
increased alertness. There was no relationship between protein
consumption and sleepiness or alertness.
The findings were independent of the participants' age, gender,
body-mass index, total amount of sleep and total intake of
calories, according to the study, scheduled for presentation in
June at the Associated Professional Sleep Societies annual meeting
"Increased fat consumption has an acute adverse effect on alertness of otherwise healthy, non-obese adults," principal investigator Dr. Alexandros Vgontzas, a professor of psychiatry at the Penn State College of Medicine, said in an American Academy of Sleep Medicine news release.
The findings add to previous research linking diet and
"Excessive daytime sleepiness and fatigue are very prevalent in the modern world and on the rise," Vgontzas said. "It appears that a diet high in fat decreases alertness acutely, and this may have an impact on an individual's ability to function and also public safety."
High-fat diets are also associated with increased risk for
certain cancers and heart disease.
Data and conclusions presented at meetings are typically
considered preliminary until published in a peer-reviewed medical
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