It’s long been recognised that overweight people are more likely to suffer from a sleep disordered breathing (SDB) condition — but there is a growing body of high quality evidence which suggests that it might actually be the other way around. That is, instead of it being ‘fat people snore’ … it could actually be ’snoring people get fat’.
Worse still, there is clear evidence that sleep disordered breathing is a significant contributor to hypertension (high blood pressure) and type 2 diabetes.
In one extremely well written paper, by Dr Ralph Pascualy of the Swedish Sleep Medicine Institute, the link between the conditions is explained thus:
“…several clear relationships have been shown between sleep deprivation and metabolic abnormalities. Sleep debt strongly affects glucose utilization as well as circadian cycles of thyrotropin, cortisol, growth hormone, and other physiological variables.
Sleep debt alone is reported to result in impaired glucose effectiveness similar to that found in non-insulin-dependent diabetics. Severe OSA significantly influences plasma insulin and glycemia and may increase the risk of diabetes independently of obesity. Not all OSA patients are obese; however, insulin resistance is found in both obese and non-obese OSA patients. Blood pressure and fasting insulin correlate closely with both BMI and the severity of OSA. Thus, both the sleep debt and the sympathetic activation that accompany OSA may speed the deterioration of glucose tolerance. Insulin resistance and hyperinsulinemia lead to further sympathetic activation, thus completing the circle of obesity, diabetes, hypertension, and the related metabolic abnormalities.”
The full article is available in the ‘Research’ section of The Sleep Therapy Clinic website at www.SleepTherapyClinic.com
