Apple Watch Sleep Apnea Notifications Now Available in Brazil

Apple today announced that the Apple Watch feature to help identify sleep apnea is now available in Brazil following the granting of a license from the Brazilian Health Regulatory Agency.

sleep apnea detection apple watch
The feature, which is now available in over 150 countries and regions, uses the Apple Watch's accelerometer to record wrist movements associated with interruptions in normal breathing patterns during sleep.

Based on the data collected, the feature assesses each day whether your levels of breathing disturbances are elevated or not elevated, and if over a 30-day period it determines the frequency of your elevated disturbances reaches a threshold, you will receive a notification of possible sleep apnea. The notification is not a diagnosis, but it does provide information to help you discuss the situation with a healthcare provider.

The algorithm uses machine learning trained on clinically validated sleep data, with Apple's feature then validated in its own clinical study, which found that 100 percent of study participants who received a positive result from the algorithm indeed had at least mild sleep apnea.

Related Roundup: Apple Watch 10
Buyer's Guide: Apple Watch (Neutral)

Popular Stories

AirPods Pro 3 Mock Feature

AirPods Pro 3 Just Months Away – Here's What We Know

Friday April 18, 2025 5:16 am PDT by
Despite being more than two years old, Apple's AirPods Pro 2 still dominate the premium wireless‑earbud space, thanks to a potent mix of top‑tier audio, class‑leading noise cancellation, and Apple's habit of delivering major new features through software updates. With AirPods Pro 3 widely expected to arrive in 2025, prospective buyers now face a familiar dilemma: snap up the proven...
iphone 16 pro models 1

17 Reasons to Wait for the iPhone 17

Thursday April 17, 2025 4:12 am PDT by
Apple's iPhone development roadmap runs several years into the future and the company is continually working with suppliers on several successive iPhone models simultaneously, which is why we often get rumored features months ahead of launch. The iPhone 17 series is no different, and we already have a good idea of what to expect from Apple's 2025 smartphone lineup. If you skipped the iPhone...
Beyond iPhone 13 Better Triad

Apple's 20th Anniversary iPhone May Finally Go All Screen

Tuesday April 15, 2025 6:31 am PDT by
Apple is preparing a "bold" new iPhone Pro model for the iPhone's 20th anniversary in 2027, according to Bloomberg's Mark Gurman. As part of what's being described as a "major shake-up," Apple is said to be developing a design that makes more extensive use of glass – and this could point directly to the display itself. Here's the case for Apple releasing a truly all-screen iPhone with no...
maxresdefault

iPhone 17 Pro Launching Later This Year With These 12 New Features

Sunday April 13, 2025 7:52 am PDT by
While the iPhone 17 Pro and iPhone 17 Pro Max are not expected to launch until September, there are already plenty of rumors about the devices. Subscribe to the MacRumors YouTube channel for more videos. Below, we recap key changes rumored for the iPhone 17 Pro models as of April 2025: Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and ...
CarPlay Hero

Apple Releases Wireless CarPlay Fix

Wednesday April 16, 2025 11:28 am PDT by
If you have been experiencing issues with wireless CarPlay in your vehicle lately, it was likely due to a software bug that has now been fixed. Apple released iOS 18.4.1 today, and the update's release notes say it "addresses a rare issue that prevents wireless CarPlay connection in certain vehicles." If wireless CarPlay was acting up for you, updating your iPhone to iOS 18.4.1 should...
top stories 2025 04 19

Top Stories: iPhone 17 Pro Rumors, CarPlay Bug Fix, and More

Saturday April 19, 2025 6:00 am PDT by
This week saw rumor updates on the iPhone 17 Pro and next-generation Vision Pro, while a minor iOS 18.4.1 update delivered not just security fixes but also a fix for some CarPlay issues. We also looked ahead at what else is in Apple's pipeline for the rest of 2025 and even the 20th-anniversary iPhone coming in 2027, so read on below for all the details on these stories and more! iPhone 17 ...
iOS 19 Roundup Feature

iOS 19 Will Add These New Features to Your iPhone

Tuesday April 15, 2025 7:37 am PDT by
The first iOS 19 beta is less than two months away, and there are already a handful of new features that are expected with the update. Apple should release the first iOS 19 beta to developers immediately following the WWDC 2025 keynote, which is scheduled for Monday, June 9. Following beta testing, the update should be released to the general public in September. Below, we recap the key...

Top Rated Comments

WarmWinterHat Avatar
18 weeks ago

When I was diagnosed with sleep apnea 7-8 years ago, I was alerted to the possibility by my dentist. Then I went to my PCP who referred me to a sleep specialist. He sent me to a special sleep center where they put electrodes all over my head and had me sleep in a clinical setting. Then I had to go back to the sleep specialist. This all took months and many dollars. The fact that much of this can be streamlined by a product that many people already have is awesome!
This doesn't replace sleep studies; it alerts you that it might be an issue. The only way to know for sure is closely watch O2 levels and brain-wave data, hence the electrodes. Sleep studies are sometimes done at home now, but someone still comes to your place to configure and fit the monitoring gear, or sends your home with a simpler monitoring setup. It depends on the situation.

Talk to your physician for an actual diagnosis.
Score: 4 Votes (Like | Disagree)
Westside guy Avatar
18 weeks ago

Now I hear they do home studies that require far less equipment, with lesser results of course but to your point if some can get a basic alert from the watch that is great.
I had a cardiologist referred me for a home sleep study. The sleep doc insisted on a full study in his sleep center. I was so covered with wires (with goo in my hair and everywhere), in an unfamiliar bed, etc. that I could never get comfortable and slept less than hour the entire night... they eventually told me to just go home about 3:30AM. And the dude diagnosed me with bunch of garbage like "restless leg" - yeah my legs were restless because there were two wires running down the legs of my pajamas! My wife rolled her eyes at some of what the guy claimed.

The apnea diagnosis was correct, but they'd have gotten that from a home study just as well.

A home sleep study may measure fewer parameters - but, in my opinion, it probably gives them better insight into your actual sleep.
Score: 3 Votes (Like | Disagree)
dwaltwhit Avatar
18 weeks ago
When I was diagnosed with sleep apnea 7-8 years ago, I was alerted to the possibility by my dentist. Then I went to my PCP who referred me to a sleep specialist. He sent me to a special sleep center where they put electrodes all over my head and had me sleep in a clinical setting. Then I had to go back to the sleep specialist. This all took months and many dollars. The fact that much of this can be streamlined by a product that many people already have is awesome!
Score: 2 Votes (Like | Disagree)
SAIRUS Avatar
18 weeks ago
Looks at price of Apple products in Brazil….starts to lose sleep over it.
Score: 2 Votes (Like | Disagree)
svish Avatar
18 weeks ago
Good to see it available in yet another region. This feature seems like it is available in a many markets but disappointing to see that it is not available in my country. Hopefully it is coming soon
Score: 1 Votes (Like | Disagree)
icanhazmac Avatar
18 weeks ago

When I was diagnosed with sleep apnea 7-8 years ago, I was alerted to the possibility by my dentist. Then I went to my PCP who referred me to a sleep specialist. He sent me to a special sleep center where they put electrodes all over my head and had me sleep in a clinical setting. Then I had to go back to the sleep specialist. This all took months and many dollars. The fact that much of this can be streamlined by a product that many people already have is awesome!
Different result than I had. I was referred about 15 years ago to the sleep center of my local hospital and received a CPAP the very next morning. Now I hear they do home studies that require far less equipment, with lesser results of course but to your point if some can get a basic alert from the watch that is great.
Score: 1 Votes (Like | Disagree)