
Dear Doctors: Is there some reason I crave junk food when I’m really tired? I’m working double shifts, and if I don’t sleep enough, all I want is donuts and pizza. My husband says it’s because they’re my favorite foods and they’re easy, but it feels different than just that. What can I do?
Answer: You’re not imagining things when it seems that the allure of sweet and fatty foods gets stronger when you’re tired or run down. Research has found a link between sleep and our endocrine system, and the connection plays out with two hormones in particular: ghrelin and leptin. Each has an important role in the regulation of hunger.