Eric Ten Brock, MD
, professor of medicine
, speaks about the changes to a person’s health that daylight savings time can bring about. “There have been studies that demonstrate increased risk of strokes and acute myocardial infarction that day and the next day,” says Ten Brock, who specializes in sleep medicine
. "Over 40 percent of adults in this country are chronically sleep-deprived. And to lose one more hour is sort of a stress test and can exacerbate that problem so that people are often more tired.” The biannual time changes have also been liked to an increased risk of depression and mood changes.