Higher Levels of Plasma DHA Associated With Longer Sleep Duration in Teenagers
Teenagers should get between 9 and 10 hours of sleep per night, but the average amount they actually get is approximately 7 hours. A recent study suggests that higher levels of plasma DHA may be associated with longer sleep duration and earlier sleep timing in teenagers.
For their study, researchers looked at data from 405 teenagers with an average age of 14. Plasma fatty acid concentrations were measured and the participants were placed into 4 categories based on lowest to highest concentrations. Participants wore an actigraphy on their wrist for 7 days to measure sleep duration and sleep timing.
Participants with the highest plasma DHA concentrations had a sleep duration that was 32 minutes longer than those with the lowest plasma DHA concentrations. Participants with the highest concentrations also had sleep timing that was up to 45 minutes earlier than those with the lowest concentrations.
The study was conducted by researchers from the University of Michigan School of Public Health. It was published online ahead of print on November 23, 2019 in theJournal of Nutrition.