From Australian Doctor, 24 August 2007:
Insulin levels and neck circumference are the two strongest predictors of the risk of obstructive sleep apnoea, a leading obesity expert says.
Speaking at the recent Australian Doctor/HealthEdGP Summit on Diabetes, Obesity and Heart Disease in Sydney, Associate Professor John Dixon said a neck circumference of 43cm or more for men and women was a clear predictor of obstructive sleep apnoea. Read more.