The reciprocal interaction between obesity and obstructive sleep apnoea

Jul 24, 2012Sleep medicine reviews

How Obesity and Obstructive Sleep Apnea Affect Each Other

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Abstract

Obstructive sleep apnoea (OSA) may contribute to the development or reinforcement of obesity through multiple mechanisms.

OSA alters energy expenditure during both sleep and wake periods.
It may influence dietary habits and the hormonal mechanisms that regulate hunger and satiety.
Fragmented sleep caused by OSA could lead to reduced sleep duration.
Current evidence does not confirm a direct effect of OSA treatment on weight loss.
The complex relationship between OSA and obesity warrants further investigation.

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Obesity is a significant risk factor in the pathogenesis of obstructive sleep apnoea (OSA) altering airway anatomy and collapsibility, and respiratory control. The association between obesity and OSA has led to an increasing focus on the role of weight loss as a potential treatment for OSA. To date, most discussion of obesity and OSA assumes a one-way cause and effect relationship, with obesity contributing to the pathogenesis of OSA. However, OSA itself may contribute to the development of obesity. OSA has a potential role in the development and reinforcement of obesity via changes to energy expenditure during sleep and wake periods, dietary habits, the neurohormonal mechanisms that control satiety and hunger, and sleep duration arising from fragmented sleep. Thus, there is emerging evidence that OSA itself feeds back into a complex mechanism that leads either to the development or reinforcement of the obese state. Whilst current evidence does not confirm that treatment of OSA directly influences weight loss, it does suggest that the potential role OSA plays in obesity and weight loss deserves further research.

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The reciprocal interaction between obesity and obstructive sleep apnoea

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