How serious are the health risks of untreated OSA?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Obstructive sleep apnea (OSA) is a condition where breathing repeatedly stops and starts during sleep. When left untreated, OSA can lead to serious health complications, including high blood pressure, heart disease, stroke, type 2 diabetes, and chronic daytime fatigue that increases accident risk.

Because OSA symptoms—like loud snoring, gasping during sleep, or morning headaches—often overlap with other conditions, identifying the cause early is critical. Taking a free, instant, online symptom check can help you clarify what your symptoms may mean, understand possible causes, and confidently decide your next steps toward proper care.

Reviewed for medical accuracy: 07/20/2026

Important Next Steps

Learn if untreated OSA is harming you Discover likely causes of your sleep apnea See if your symptoms need care today Find OTC options for sleep-related symptoms Find a sleep specialist near you Discover safe home remedies for sleep apnea Understand if it could be dangerous OSA

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Explanation

Obstructive sleep apnea (OSA) is a condition where breathing stops and starts during sleep. If not treated, it can cause serious health issues. People with untreated OSA have a higher risk of developing heart problems, like high blood pressure and heart disease.

Health Risks:

Heart Problems: Untreated OSA can lead to high blood pressure, heart attacks, and other heart-related issues.
Daytime Sleepiness: People with OSA often feel very sleepy during the day, which can affect their daily life and increase the risk of accidents.
Other Health Issues: OSA can also lead to problems like diabetes and stroke.

It's important to recognize and treat OSA to avoid these serious health risks. If you or someone you know shows signs of OSA, like loud snoring or feeling very tired during the day, you can check your symptoms with a free AI-powered tool or talk to a doctor.

(References)

Kendzerska T, Mollayeva T, Gershon AS, Leung RS, Hawker G, & Tomlinson G. (2014). Untreated obstructive sleep apnea and the risk for serious .... Sleep medicine reviews, 23642349.
Henning RJ, & Anderson WM. (2025). Sleep apnea is a common and dangerous cardiovascular .... Current problems in cardiology, 39242062.
Morsy NE, Farrag NS, Zaki NFW, Badawy AY, Abdelhafez SA, El-Gilany AH, et al. (2019). Obstructive sleep apnea: personal, societal, public health, .... Reviews on environmental health, 31085749.

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