Studies have found that sleep restriction can increase the presence of inflammatory markers. Inflammation is a risk factor for heart disease and stroke, so it may in part explain why bad sleep is related to heart disease. Knutson says such markers are complicated, however, and what really matters is whether poor sleep increases inflammation chronically.
Credit: Raffaella Castagnoli / Getty Images
Powered By ZergNet
Sign up to receive the Men’s Journal newsletter and special offers from MJ and its marketing partners.
56 Perfect Things
Tech, Tools, Toys, & the Hottest New Gear
Plus: The Deadly Thrill of BASE Jumping
ON NEWSSTANDS NOW