Your understanding is wrong, obesity directly causes sleep apnea. > There is a linear correlation between obesity and OSA. In obese people, fat deposits in the

Your understanding is wrong, obesity directly causes sleep apnea. > There is a linear correlation between obesity and OSA. In obese people, fat deposits in the upper respiratory tract narrow the airway; there is a decrease in muscle activity in this region, leading to hypoxic and apneic episodes, ultimately resulting in sleep apnea. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5836788/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5836788/