Tim Cook Shares Lifesaving Apple Watch Story After Teen Goes Into Kidney Failure
A recent study claimed that the Apple Watch can detect abnormal heart rhythms with 97 percent accuracy, and today Apple CEO Tim Cook shared a new story in which the company's wearable device did just that, saving someone's life in the process.
Speaking with Tampa, Florida's ABC affiliate WFTS, 18-year-old Deanna Recktenwald said that one day her Apple Watch warned her that her resting heart rate hit 190 beats per minute. After staff at a walk-in clinic confirmed a similar heart rate, Deanna was sent to the emergency room where doctors found that she was in kidney failure.

Deanna's parents gifted her the Apple Watch for Christmas last year, with the family now thankful for its ability to alert them to a condition that might have otherwise continued to go unnoticed. "Now that we have some answers to why this is happening we can prevent something major from happening down the road," said Deanna.
Deanna's mother Stacey wrote to Apple, explaining what happened and thanking the company for the Apple Watch.
"After about an hour the blood work came back and the doctors reviewed the results and told us that Deanna was in Kidney Failure. Her kidneys were only functioning at 20%. She had no symptoms of any kidney issues or any other medical issues. If it wasn't for her Apple watch alarming her about her HR we wouldn't have discovered her kidney issue.
I honestly feel that your Apple Watch has saved my daughter's life. She is heading off for college in August and her condition may have been overlooked and if it wasn't caught now the doctor said she would have needed a kidney transplant. I am forever grateful to Apple for developing such an amazing lifesaving product. Now I can send her off to college and know that she can monitor her HR and seek attention if it alarms her again.
Tim Cook responded to Stacey in an email, and this morning tweeted about the event. "Stories like Deanna's inspire us to dream bigger and push harder every day," Cook's tweet reads. Apple has even teamed up with Stanford for its own study on whether the Apple Watch can detect abnormal heart rhythms and other common heart problems.
In addition to Cardiogram's study on abnormal heart rhythms, a study published by the company late last year reported that the Apple Watch may be able to accurately detect hypertension and sleep apnea. The study found that Cardiogram's deep neural network was able to recognize hypertension (aka high blood pressure) with 82 percent accuracy and sleep apnea with 90 percent accuracy. In 2018, Cardiogram's latest study suggested the Apple Watch can be used to detect the signs of diabetes.
Popular Stories
Apple today updated its trade-in values for select iPhone, iPad, Mac, and Apple Watch models. Trade-ins can be completed on Apple's website, or at an Apple Store.
The charts below provide an overview of Apple's current and previous trade-in values in the U.S., according to its website. Maximum values for most devices either decreased or saw no change, but the iPad Air received a slight bump.
...
Apple is promoting the new Liquid Glass design in iOS 26, showing off the ways that third-party developers are embracing the aesthetic in their apps. On its developer website, Apple is featuring a visual gallery that demonstrates how "teams of all sizes" are creating Liquid Glass experiences.
The gallery features examples of Liquid Glass in apps for iPhone, iPad, Apple Watch, and Mac. Apple...
Apple's online store in the U.S. is suddenly offering a pack of four AirTags for just $29, which is the same price as a single AirTag.
This is likely a pricing error, and it is unclear if orders will be fulfilled. Apple has not discounted the AirTag four-pack in any other countries that we checked.
Delivery estimates are already pushing into late November to early December, suggesting...
We're officially in the month of Black Friday, which will take place on Friday, November 28 in 2025. As always, this will be the best time of the year to shop for great deals, including popular Apple products like AirPods, iPad, Apple Watch, and more. In this article, the majority of the discounts will be found on Amazon.
Note: MacRumors is an affiliate partner with some of these vendors. When ...
Following more than a month of beta testing, Apple released iOS 26.1 on Monday, November 3. The update includes a handful of new features and changes, including the ability to adjust the look of Liquid Glass and more.
Below, we outline iOS 26.1's key new features.
Liquid Glass Toggle
iOS 26.1 lets you choose your preferred look for Liquid Glass.
In the Settings app, under Display...
IKEA today announced the upcoming launch of 21 new Matter-compatible smart home products that will be able to interface with HomeKit and the Apple Home app. There are sensors, lights, and control options, all of which will be reasonably priced. Some of the products are new, while some are updates to existing lines that IKEA previously offered.
There are a series of new smart bulbs that are...
The future of Apple Fitness+ is "under review" amid a reorganization of the service, according to Bloomberg's Mark Gurman.
In the latest edition of his "Power On" newsletter, Gurman said that Apple Fitness+ remains one of the company's "weakest digital offerings." The service apparently suffers from high churn and little revenue.
Nevertheless, Fitness+ has a small, loyal fanbase that...
Apple will conceal the front-facing camera under the screen of its 2027 iPhone, a Chinese leaker said today, corroborating reports that Apple's 20th anniversary iPhone will have no visible cutouts in the display.
Weibo-based account Digital Chat Station said Apple's development of under-screen camera technology was progressing as planned for adoption in 2027, one year after it will...
HTX Studio this week shared the results from a six-month battery test that compared how fast charging and slow charging can affect battery life over time.
Using six iPhone 12 models, the channel set up a system to drain the batteries from five percent and charge them to 100 percent over and over again. Three were fast charged, and three were slow charged.
Another set of iPhones underwent...