Men with comorbid obstructive sleep apnea and insomnia symptoms have a greater likelihood and severity of depression than men with only one of these conditions, according to research recently published in Respirology.

Obstructive sleep apnea (OSA) and insomnia are the two most prevalent sleep disorders and often coexist in patients, according to researchers; comorbid insomnia and OSA is reported in 42% to 55% of OSA patients in primary care or sleep clinics.