Work

Acute sleep deprivation increases food purchasing in men

Year: 2013

Type: article

Abstract: OBJECTIVE: To investigate if acute sleep deprivation affects food purchasing choices in a mock supermarket. DESIGN AND METHODS: On the morning after one night of total sleep deprivation (TSD) or after one night of sleep, 14 normal-weight men were given a fixed budget (300 SEK-approximately 50 USD). They were instructed to purchase as much as they could out of a possible 40 items, including 20 high-caloric foods (>2 kcal/g) and 20 low-caloric foods (<2 kcal/g). The prices of the high-caloric foods were then varied (75%, 100% (reference price), and 125%) to determine if TSD affects the flexibility of food purchasing. Before the task, participants received a standardized breakfast, thereby minimizing the potential confound produced by hunger. In addition, morning plasma concentrations of the orexigenic hormone ghrelin were measured under fasting conditions. RESULTS: Independent of both type of food offered and price condition, sleep-deprived men purchased significantly more calories (+9%) and grams (+18%) of food than they did after one night of sleep (both P < 0.05). Morning plasma ghrelin concentrations were also higher after TSD (P < 0.05). However, this increase did not correlate with the effects of TSD on food purchasing. CONCLUSIONS: This experiment demonstrates that acute sleep loss alters food purchasing behavior in men.

Source: Obesity

DOI: 10.1002/oby.20579