Sally stated that recent stresses in her life are affecting her sleep and seemed to have triggered her appetite for sweets and comfort foods. Which of the following statements would be best to explain why her lack of sleep has increased her appetite? a. The satiety hormone leptin increases with lack of sleep. b. Lack of sleep decreases ghrelin levels. c. Levels of Neuropeptide Y, a brain chemical that causes carbohydrate cravings, are most likely high and are causing her sleep problems. d. Lack of sleep increases levels of ghrelin which stimulates appetite, and decreases levels of leptin that decreases appetite.
