10/27/2025
Risks of Untreated Sleep Apnea
Untreated obstructive sleep apnea can lead to a variety of health complications ranging from changes in mood, thinking, and memory to chronic health conditions like hypertension, diabetes, liver disease, and heart health problems.
Changes in mood, memory, and thinking: Untreated obstructive sleep apnea can cause changes in the way a person thinks and feels as well as their ability to remember information and react.
Type II diabetes: Type 2 diabetes, insulin resistance, and complications from diabetes are all more common in people with obstructive sleep apnea.
Cardiovascular disease: A range of heart health problems can arise if obstructive sleep apnea goes undiagnosed and untreated, high blood pressure, heart failure, and stroke.
Liver disease: Individuals with untreated obstructive sleep apnea are three times as likely to develop a condition called nonalcoholic fatty liver disease.
Pulmonary hypertension: 20% of people with moderate to severe obstructive sleep apnea have pulmonary hypertension, which develops a person’s blood pressure inside of the lungs is above normal levels.