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A new paper which reviews the evidence from sleep restriction studies reveals that inadequate sleep is linked to obesity. The research, published in a special issue of the The American Journal of Human Biology, explores how lack of sleep can impact appetite regulation, impair glucose metabolism and increase blood pressure.
Obesity develops when energy intake is greater than expenditure. Diet and physical activity play an important part in this, but an additional factor may be inadequate sleep. Now, a review of the evidence shows how short or poor quality sleep is linked to increased risk of obesity by de-regulating appetite, leading to increased calorie consumption.
Researchers from the University of Chicago accumulated evidence from experimental and observational studies of sleep. Observational studies revealed cross-sectional associations between getting fewer than six hours sleep and increased body mass index (BMI) or obesity.
The studies revealed how signals from the brain which control appetite regulation are impacted by experimental sleep restriction. Inadequate sleep impacts secretion of the signal hormones ghrelin, which increases appetite, and leptin, which indicates when the body is satiated. This can lead to increased food intake without the compensating energy expenditure.
The evidence suggests the association between inadequate sleep and higher BMI is stronger in children and adolescents. It also shows that sleep deficiency in lower socioeconomic groups may result in greater associated obesity risks.
The majority of the studies examined came from Western countries. However other research papers in the special issue focus on obesity in the United Arab Emirates, Samoa, and Brazil.
These findings show that sleeping poorly can increase a person's risk of developing obesity, diabetes, high blood pressure or heart disease. The researchers concluded that future research should determine whether efforts to improve sleep can also help prevent the development of these diseases.
All research on this web site is the property of Leslie Beck and is protected by copyright. Keep in mind that research on these matters continues daily and is subject to change. The information presented is not intended as a substitute for medical treatment. It is intended to provide ongoing support of your healthy lifestyle practices.
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