Do older age, male sex, central adiposity, hypertension, type 2 diabetes, and snoring increase the likelihood of obstructive sleep apnea?

Obstructive sleep apnea (OSA) is strongly driven by a distinct profile of demographic, anatomical, and cardiometabolic risk factors.

Demographic and anatomical predictors

• Sex and age: Male sex is associated with a 2-to-3-fold higher prevalence of OSA compared to female sex, and advancing age further escalates the likelihood of moderate-to-severe disease.
• Central adiposity: Anthropometric measures of central adiposity, such as waist circumference and waist-to-height ratio, are stronger predictors of OSA than general body mass index (BMI).
• Habitual snoring: When combined with indicators of central obesity, habitual snoring delivers a positive predictive value of 80% to 90% for detecting moderate-to-severe OSA.

Cardiometabolic and bidirectional mechanisms

• Co-clustering comorbidities: Hypertension and type 2 diabetes are highly prevalent comorbidities that scale with apnea-hypopnea index (AHI) severity.
• Pathophysiological pathways: The relationship is bidirectional. OSA-induced intermittent hypoxia and sympathetic activation independently drive vascular resistance and insulin resistance, leading to a significantly increased risk of incident hypertension and incident type 2 diabetes (relative risk [RR] ~1.40).

Bottom line

• Older age, male sex, central adiposity, and snoring are robust, independent predictors that dramatically increase the likelihood of obstructive sleep apnea, while hypertension and type 2 diabetes represent closely intertwined, bidirectionally linked cardiometabolic consequences and risk markers.