Sleep deprivation increases food purchasing the next day

People who were deprived of one night’s sleep purchased more calories and grams of food in a mock supermarket on the following day, according to a new study published in the journal Obesity, the official journal of The Obesity Society. Sleep deprivation also led to increased blood levels of ghrelin, a hormone that increases hunger, on the following morning. But there was no correlation between individual ghrelin levels and food purchasing, suggesting that other mechanisms – such as impulsive decision making – may be more responsible for increased purchasing. Researchers in Sweden were curious as to whether sleep deprivation may