lack of sleep

Lack of Sleep Can Lead to Weight Gain

New research shows that sleep deprivation may result in people consuming more calories.

By Live Naturally Staff

Share this Post

There may be some truth in the saying “early to bed, early to rise, makes a man healthy and wise.” According to a new study published in European Journal of Clinical Nutrition, a lack of sleep may result in people consuming more calories during the following day.

Researchers at King’s College London combined the results of 11 studies that included 172 participants. The combined analyses found that sleep-deprived people consumed an average of 385 kcal per day extra, which is equivalent to the calories of about four and a half slices of bread. The researchers found there was a small shift in what sleep-deprived people ate—they had proportionately higher fat and lower protein intakes, but no change in carbohydrate intake.

On the flip side, the analysis also included studies that compared a partial sleep restriction intervention with an unrestricted sleep control and measured the individuals’ energy intake over the next 24 hours. Researchers found partial sleep deprivation did not have a significant effect on how much energy people expended in the subsequent 24 hours. Therefore, participants had a net energy gain of 385 calories per day.

Dr. Gerda Pot, senior author from the Diabetes & Nutritional Sciences Division at King’s College London and Vrije Universiteit Amsterdam, said, “The main cause of obesity is an imbalance between calorie intake and expenditure, and this study adds to accumulating evidence that sleep deprivation could contribute to this imbalance. If long-term sleep deprivation continues to result in an increased calorie intake of this magnitude, it may contribute to weight gain.”

Dr. Pot adds that, “Reduced sleep is one of the most common and potentially modifiable health risks in today’s society in which chronic sleep loss is becoming more common. More research is needed to investigate the importance of long-term, partial sleep deprivation as a risk factor for obesity and whether sleep extension could play a role in obesity prevention.”

A previous small study in 26 adults found partial sleep deprivation resulted in greater activation of areas in the brain associated with reward when people were exposed to food. A greater motivation to seek food could be an explanation for the increased food intake seen in sleep-deprived people in this study, the authors suggest. Other possible explanations include a disruption of the internal body clock affecting the body’s regulation of leptin (the “satiety” hormone) and ghrelin (the “hunger” hormone).

The amount of sleep restriction varied between the studies, with the sleep- deprived participants sleeping between three-and-a-half and five-and-a-half hours in the night. The control subjects spent between seven and 12 hours in bed.

The authors suggest that more intervention studies are needed into the effect of increased sleep duration over longer periods in everyday life on weight gain and obesity, as most of the studies included in this analysis were in controlled laboratory conditions over periods of one day to two weeks.

Story Source: King’s College London


Share this Post


Leave a Reply