influence of sleep on food intake and metabolism

Crispim et al , 2007 The influence of sleep and sleep loss upon food intake and metabolism Nutrition Research Reviews vol 20 195-212
This review looks at the role of sleep and its alteration in influencing metabolic disorders. A reduction in the amount of time spent sleeping has become an endemic condition in modern society. There are important associations between sleep loss and alterations in nutritional and metabolic aspects.
Some studies suggest that individuals who sleep less have a greater probability of becoming obese. This may be related to an increase of ghrelin and decrease of leptin concentrations and an increase of appetite and hunger
Sleep loss has been closely associated with problems in glucose metabolism and a higher risk for the development of insulin resistance and diabetes, and this disturbance may reflect decreased efficacy of the negative-feedback regulation of the hypothalamic- pituitary -adrenal axis.
During of sleep there is also an increase in blood lipid concentrations, which can be be more pronounced with reduced sleep time, leading to disorders in fat metabolism.
The authors conclude sleep loss represents an important risk factor for weight gain, insulin resistance, type 2 diabetes and dyslipidaemia.
Therefore, an adequate sleep pattern is fundamental for the nutritional balance of the body and should be encouraged by professionals in the area.
It does of course matter why there is sleep loss. There is a difference between an active social night life sleep loss and anxiety induced sleep loss and consequent metabolic problems.

Martin Eastwood
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