Maybe avoid the wafting aromas of your local bake shop if you skimped on sleep the night before.
is suggesting it’s not only your brain that plays a role: Your nose could also be a real junk food partner in crime., the study recruited 29 men and women, aged 18 to 40, and divided them into two groups. One got a normal night’s sleep, then four weeks later, were only allowed to sleep for four hours one night. The experience was reversed for the second group.
Each group of participants showed more activity in the piriform cortex—the part of the brain that receives input from the nose—when sleep deprived. They also ate more calorie-dense foods, like doughnuts, chocolate chip cookies, and potato chips, after their short-sleep nights.“Previous research has shown that sleep deprivation leads to changes in the type of food people eat, and that chronic lack of sleep is linked to obesity,” said senior author Thorsten Kahnt, Ph.D.
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