Most people who routinely fly have experienced the nagging effects of jet lag. In the Feb. 4 edition of the New England Journal of Medicine, Robert Sack, MD, Professor, Department of Psychiatry, was invited to provide expert advice on preventing or diminishing the effects of jet lag. "Jet lag affects a large proportion of the more than 30 million travelers who embark from the United States each year and cross five or more time zones," said Dr. Sack. "The condition is specifically caused by crossing time zones at a speed more rapid than the body's circadian clock can keep pace. As a result, the body clock and local time become misaligned for a period that can last up to a week or more." The OHSU media release is here.