Study examines the natural history of excessive daytime sleepiness

A study in the March issue of SLEEP shows that the incidence of excessive daytime sleepiness after a follow-up period of 7.5 years was 8.2 percent, while its persistence and remission were 38 percent and 62 percent. Obesity and weight gain were associated with the incidence and persistence of EDS, while weight loss was associated with its remission. While objective sleep disturbances predicted incident EDS in depressed individuals, physiologic sleep propensity predicted incident EDS in those without depression.

Read the study:  Natural History of Excessive Daytime Sleepiness: Role of Obesity, Weight Loss, Depression, and Sleep Propensity