Sleep Apnea Is
Common, Silent, and
Treatable.
An estimated 80% of moderate-to-severe sleep apnea cases go undiagnosed. An at-home sleep study takes one night in your own bed — no clinic, no lab, no sleep technician watching you. Just a small wearable device and a result that can change your health trajectory.
Sleep apnea doesn't just
disrupt sleep — it disrupts
everything.
When your airway collapses repeatedly at night, your brain wakes you just enough to restart breathing — sometimes 30 or more times per hour. You never remember it. But your body does.
Untreated sleep apnea is a systemic condition. It drives elevated cortisol, suppressed testosterone, insulin resistance, cardiovascular stress, and chronic inflammation — in ways that undermine almost every health and optimization goal you have.
Six metrics from one night
A type III home sleep apnea test captures everything needed to diagnose and grade sleep-disordered breathing — all from a wearable device you apply yourself before bed.
Apnea-Hypopnea Index
The core diagnostic metric — how many times per hour breathing pauses or becomes dangerously shallow. AHI determines OSA severity and guides treatment decisions.
Primary diagnosis markerOxygen Saturation (SpO₂)
Blood oxygen percentage tracked throughout the night. Drops below 90% during apnea events are directly linked to cardiovascular stress, cognitive impairment, and hormonal suppression.
Normal ≥ 95%Heart Rate
Changes in heart rate correlated with breathing events — revealing the cardiovascular burden each apnea places on the body over the course of a night.
Cardiac stress indicatorBreathing Effort
Measures how hard your chest and abdomen work to force air through a partially obstructed airway — distinguishing obstructive apnea from central apnea.
Obstruction type classificationBody Position
Tracks whether apnea events are positional — worse on your back, better on your side. Identifies whether positional therapy could reduce severity before CPAP is prescribed.
Treatment planningSnoring & Airflow
Continuous airflow monitoring quantifies the degree of airway obstruction and correlates snoring patterns with apnea severity — identifying partial obstruction that may not fully qualify as apnea.
Airway obstruction gradeYour AHI determines the path forward
The Apnea-Hypopnea Index is expressed as breathing events per hour of sleep.
No significant sleep-disordered breathing detected
Lifestyle interventions and positional therapy may be sufficient
CPAP or oral appliance therapy typically recommended
CPAP required — and TRT is contraindicated until treated
Your Mend practitioner reviews your full results and recommends next steps — including referral for in-lab polysomnography if needed.
Sleep apnea and low
testosterone run in
the same circles.
Your body produces testosterone primarily during deep, uninterrupted REM sleep. Every apnea event that fragments REM directly suppresses that production — creating a cycle where poor sleep drives low testosterone, and low testosterone further disrupts sleep architecture.
Clinically: untreated moderate-to-severe OSA is a contraindication to TRT. Starting testosterone in a patient with undiagnosed sleep apnea can worsen airway obstruction, increase apnea events, and deepen the hormonal disruption you're trying to solve.
Learn About TRT at MendREM disruption → testosterone suppression
Testosterone peaks during the first REM cycle. Apnea events that fragment REM every 2–3 minutes eliminate this peak entirely.
Intermittent hypoxia → HPA axis stress
Oxygen drops during apnea activate the stress response — elevating cortisol overnight, which directly suppresses GnRH and LH signaling to the testes.
Treating OSA can restore testosterone
In hypogonadal men with OSA, CPAP therapy has been shown to improve morning testosterone levels — sometimes eliminating the clinical need for TRT.
At Mend, a sleep study is included in the standard workup before initiating TRT — not because it's required by protocol, but because treating sleep apnea first may be the most direct path to higher testosterone.
Sleep apnea rarely
announces itself
clearly.
Most people don't know they stop breathing at night. The symptoms are diffuse, often attributed to age or stress — and frequently overlap with the same complaints that bring people to a hormone clinic in the first place.
Common Symptoms & Risk Factors
OSA and obesity
drive each other —
and each other's treatment.
Obesity is the strongest modifiable risk factor for sleep apnea. Conversely, untreated OSA drives insulin resistance, cortisol dysregulation, and appetite dysregulation — making weight loss harder. Treating both simultaneously produces better outcomes on both fronts.
Learn About Medical Weight LossThree steps. One night.
Order & Receive
Your Mend practitioner orders the test — a small wearable device kit shipped to your home or dispensed directly, with step-by-step instructions included.
Telehealth eligible — all AZSleep at Home
Apply the sensors before bed — wrist device, nasal airflow cannula, and chest belt. Sleep as normal. The device records all night and you ship it back the next day.
~5 min setup · your own bedPractitioner Review
Results in 5–7 business days. Your Mend practitioner reviews your AHI, oxygen desaturation, and breathing pattern — and recommends next steps specific to your situation and goals.
Personalized action planFAQ
Common Questions
One night can change
your entire protocol.
At-home. One night. A practitioner-reviewed result that connects your sleep to your hormones, your weight, and your long-term health — and a clear plan to address what's found.
Important Information
At-home sleep apnea testing (HSAT) is appropriate for adults with a high clinical suspicion for moderate-to-severe obstructive sleep apnea who do not have significant comorbid conditions such as severe COPD, congestive heart failure, or neuromuscular disease. It is not suitable for evaluating central sleep apnea, narcolepsy, REM behavior disorder, periodic limb movement disorder, or other complex sleep disorders — these require in-lab polysomnography.
A home sleep test cannot diagnose a sleep disorder — diagnosis requires interpretation by a licensed healthcare practitioner in the context of the full clinical picture. A negative result in a symptomatic patient does not rule out sleep apnea and may warrant an in-lab study. This test must be ordered by a licensed practitioner. Mend Medical coordinates testing logistics but is not a sleep medicine clinic — patients with complex sleep disorders will be referred appropriately. HSA/FSA eligibility and insurance coverage vary — confirm with your provider before booking.