Causes and Risk Factors
During sleep, the soft tissues at the back of the throat can collapse and narrow or close the airway. Several factors make this more likely:- Excess body weight: Fat deposits around the upper airway are the single most important risk factor in adults.
- Anatomy: A thick neck, large tonsils, a large tongue, a small or recessed jaw, or chronic nasal congestion can narrow the airway.
- Age and sex: Sleep apnea becomes more common with age and affects men more often, although risk in women rises after menopause.
- Alcohol and sedatives: These relax the throat muscles and worsen airway collapse, especially near bedtime.
- Smoking and family history: Both increase the likelihood of developing the condition.
Symptoms
Many people learn about their symptoms from a bed partner. Common signs include:- Loud, chronic snoring: Often interrupted by silent pauses followed by gasping or choking sounds.
- Excessive daytime sleepiness: Dozing off while reading, watching television, or driving despite a full night in bed.
- Morning headaches and dry mouth: Frequent on waking.
- Poor concentration, irritability, or low mood: Fragmented sleep affects memory and mental health.
- Frequent nighttime urination: Waking several times a night to urinate can be a clue.
Diagnosis
Diagnosis is made with a sleep study, either a home sleep apnea test or an overnight study in a sleep laboratory. These tests count how many times per hour breathing pauses or becomes shallow and measure how far blood oxygen levels drop. Your physician will also review your blood pressure, heart health, and medications, since untreated apnea makes conditions such as diabetes and hypertension harder to control.Treatment
Effective treatment restores restful sleep and lowers cardiovascular risk.- CPAP therapy: Continuous positive airway pressure, delivered through a small mask, holds the airway open and is the most effective treatment for moderate to severe OSA.
- Oral appliances: Custom dental devices that move the jaw forward can help mild to moderate cases or people who cannot tolerate CPAP.
- Weight loss and lifestyle changes: Losing even 10 percent of body weight, avoiding alcohol before bed, and sleeping on your side can meaningfully reduce apnea severity.
- Wake-promoting medications: For people who remain sleepy despite good CPAP use, medications such as solriamfetol, modafinil, or armodafinil may be prescribed to improve daytime alertness.
- Surgery or implanted nerve stimulators: Options for selected patients when other measures fail.
Complications
Each apnea episode briefly drops blood oxygen and jolts the body with stress hormones, hundreds of times a night. Over years, this contributes to resistant high blood pressure, heart rhythm problems, heart failure, worsening blood sugar control, memory difficulty, and depression. Daytime sleepiness also roughly doubles the risk of motor vehicle crashes, which is why treatment matters for safety as well as health. The good news: consistent CPAP use improves blood pressure, mood, and alertness within weeks for most people. Untreated sleep apnea rarely improves on its own, and ongoing follow-up helps confirm that therapy is working. If you snore loudly, wake unrefreshed, or fight sleepiness during the day, the internal-medicine team at Zimmer Medical Group can arrange sleep testing and coordinate your treatment — schedule a visit to get started.Making Sleep Apnea Treatment Work
Sleep apnea is easy to diagnose and, for most people, effectively treatable, yet a large share of those diagnosed abandon treatment within the first year. Most of that drop-off is preventable with the right setup in the first month and a clear plan for what to do if the first approach fails.
Getting tested is simpler than it used to be
A home sleep test worn for one night answers the question for most adults, with an overnight laboratory study reserved for complicated cases. The result is an apnea-hypopnea index: fewer than five events an hour is normal, five to fifteen is mild, fifteen to thirty is moderate, and above thirty is severe. Our sleep apnea diagnosis guide explains what the test involves and how to arrange one.
The first month on CPAP decides everything
Mask fit, heated humidification, and a pressure ramp at bedtime resolve most early problems, and asking for a different mask style is expected rather than a nuisance. Insurance coverage usually depends on using the device at least four hours a night on 70 percent of nights in the first three months, and the machine reports that data, so early follow-up to fix leaks and discomfort is worth insisting on. Benefits in energy, mood, and blood pressure appear within weeks in most people who use it consistently.
When CPAP is not the answer
A custom oral appliance that holds the jaw forward treats mild to moderate apnea well and suits people who travel or cannot tolerate a mask. Positional therapy helps when events occur mainly on the back. An implanted nerve stimulator that moves the tongue during sleep is an option for moderate to severe disease in selected patients. Weight loss reduces severity substantially, and in people with obesity a GLP-1 based medication is now approved specifically for sleep apnea.
What treatment fixes, and what it helps
Treating apnea improves daytime alertness, mood, and driving safety reliably, lowers blood pressure modestly, and reduces recurrence of atrial fibrillation after treatment. Sleepiness that persists despite good CPAP use is checked first for leaks and insufficient sleep time, then for other causes such as narcolepsy or restless legs, before a wake-promoting medication such as modafinil is added.
Surgery, sedatives, and alcohol
Tell any anesthesiologist about sleep apnea before a procedure, bring the CPAP to the hospital, and avoid sleeping pills, benzodiazepines, and evening alcohol, all of which relax the airway and worsen events. Insomnia and apnea often coexist, and treating the apnea usually has to come first. Our senior sleep apnea guide covers the questions that come up most after 65. The American Academy of Sleep Medicine and NHLBI publish patient guidance on testing and treatment.
If you were diagnosed with sleep apnea and stopped using CPAP, or were never offered an alternative, schedule a visit; there are more options than there were a few years ago.