Apple Tested Blood Sugar App for Preventing Diabetes

Apple has been testing a health-focused app that's aimed at diabetes prevention, reports Bloomberg's Mark Gurman. The app isn't slated for release, but it could help inform some of Apple's future products related to blood sugar management.

apple health app
Select employees with prediabetes were invited to test the app, which offered assistance with food selection and lifestyle changes. Employees who participated confirmed that they had prediabetes with a blood test, and then actively monitored their meals and their blood sugar using glucose monitoring devices.

The app was used to demonstrate to employees how healthy and unhealthy food choices could impact their blood sugar and lead to disease progression. A significant glucose spike after a carbohydrate-heavy meal, for example, could encourage testers to consume more protein and make different choices. Intervening at the prediabetes stage could help millions of people avoid developing diabetes 2.

According to Gurman, Apple used the app to look at how blood sugar data could be used, and what future tools might be helpful for consumers. For the last several years, Apple has been working to add non-invasive blood glucose monitoring functionality to the Apple Watch. Currently, most blood sugar tests require a skin prick, but Apple is developing a method that uses optical absorption spectroscopy and lasers to determine the concentration of glucose in the body without puncturing the skin.

As of last year, Apple's work on blood glucose monitoring had reached a "proof-of-concept" stage. Apple has a functional prototype device, but it is still much too large to incorporate into a device the size of the Apple Watch. It will likely be several more years before Apple is able to release an Apple Watch that has noninvasive blood sugar tracking features.

In the meantime, Apple could develop more advanced food logging and glucose tracking tools for the Health app, expanding integration with third-party blood glucose monitors.

Related Roundup: Apple Watch 11
Buyer's Guide: Apple Watch (Buy Now)

Popular Stories

iPhone Pocket Short

iPhone Pocket is Now Completely Sold Out Worldwide

Tuesday November 25, 2025 7:16 am PST by
Apple recently teamed up with Japanese fashion brand ISSEY MIYAKE to create the iPhone Pocket, a limited-edition knitted accessory designed to carry an iPhone. However, it is now completely sold out in all countries where it was released. iPhone Pocket became available to order on Apple's online store starting Friday, November 14, in the United States, France, China, Italy, Japan, Singapore, ...
iOS 26

When Will Apple Release iOS 26.2?

Monday December 1, 2025 4:37 pm PST by
We're getting closer to the launch of the final major iOS update of the year, with Apple set to release iOS 26.2 in December. We've had three betas so far and are expecting a fourth beta or a release candidate this week, so a launch could follow as soon as next week. Past Launch Dates Apple's past iOS x.2 updates from the last few years have all happened right around the middle of the...
Sad Siri Feature

Apple AI Chief John Giannandrea Retiring After Siri Delays

Monday December 1, 2025 2:16 pm PST by
Apple AI chief John Giannandrea is stepping down from his position and retiring in spring 2026, Apple announced today. Giannandrea will serve as an advisor between now and 2026, with former Microsoft AI researcher Amar Subramanya set to take over as vice president of AI. Subramanya will report to Apple engineering chief Craig Federighi, and will lead Apple Foundation Models, ML research, and ...
Netflix Smaller 4

Netflix Kills Casting From Its Mobile App to Most Modern TVs

Monday December 1, 2025 4:36 am PST by
Netflix has quietly removed the ability to cast content from its mobile apps to most modern TVs and streaming devices, including newer Chromecast models and the Google TV Streamer. The change was first spotted by users on Reddit and confirmed in an updated Netflix support page (via Android Authority), which now states that the streaming service no longer supports casting from mobile devices...
Cyber Week Deals 2025

Best Cyber Week Apple Deals Include Big Discounts on AirPods, Apple Watch, and More

Sunday November 30, 2025 7:33 am PST by
Cyber Week is here, and you can find popular Apple products like AirPods, iPad, Apple Watch, and more at all-time low prices. 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 you click a link and make a purchase, we may receive a small payment, which helps us keep the site running. Specifically,...
maxresdefault

iPhone Fold: Launch, Pricing, and What to Expect From Apple's Foldable

Monday December 1, 2025 3:00 am PST by
Apple is expected to launch a new foldable iPhone next year, based on multiple rumors and credible sources. The long-awaited device has been rumored for years now, but signs increasingly suggest that 2026 could indeed be the year that Apple releases its first foldable device. Subscribe to the MacRumors YouTube channel for more videos. Below, we've collated an updated set of key details that ...
studio display purple february

M5 iPad Pro Could Hint at New Studio Display Feature

Sunday November 30, 2025 10:30 am PST by
The updated specs of the M5 iPad Pro may point toward a major new feature for Apple's next-generation Studio Display expected in early 2026. Apple's latest iPad Pro debuted last month and contains one display-related change that stands out: it can now drive external monitors at up to 120Hz with Adaptive Sync. The feature should deliver lower latency, smoother motion, and fewer visual...
Touchscreen MacBook Feature

Here Are the Four MacBooks Apple Is Expected to Launch Next Year

Monday December 1, 2025 5:00 am PST by
2026 could be a bumper year for Apple's Mac lineup, with the company expected to announce as many as four separate MacBook launches. Rumors suggest Apple will court both ends of the consumer spectrum, with more affordable options for students and feature-rich premium lines for users that seek the highest specifications from a laptop. Below is a breakdown of what we're expecting over the next ...
New Intel Logo

Apple and Intel Rumored to Partner on Mac Chips Again in a New Way

Friday November 28, 2025 7:33 am PST by
While all Macs are now powered by Apple's custom-designed chips, a new rumor claims that Apple may rekindle its partnership with Intel, albeit in a new and limited way. Apple supply chain analyst Ming-Chi Kuo today said Intel is expected to begin shipping Apple's lowest-end M-series chip as early as mid-2027. Kuo said Apple plans to utilize Intel's 18A process, which is the "earliest...
iphone black friday gold

The Best Black Friday iPhone Deals Still Available

Friday November 28, 2025 6:24 am PST by
Cellular carriers have always offered big savings on the newest iPhone models during the holidays, and Black Friday 2025 sales have kicked off at AT&T, Verizon, T-Mobile, and more. Right now we're tracking notable offers on the iPhone 17, iPhone 17 Pro, iPhone 17 Pro Max, and iPhone Air. For even more savings, keep an eye on older models during the holiday shopping season. Note: MacRumors is...

Top Rated Comments

lazyrighteye Avatar
15 months ago
If they can get this right.... huge. Worthy endeavor. Way more so than genmoji.
Score: 15 Votes (Like | Disagree)
smithrh Avatar
15 months ago

An app is fine but the best solution is to prevent diabetes before a person gets it.

For most people, that's watching their diet and exercising.
Re-read the article. It's *specifically* about pre-diabetes.
Score: 11 Votes (Like | Disagree)
TheWraith Avatar
15 months ago

An app is fine but the best solution is to prevent diabetes before a person gets it.

For most people, that's watching their diet and exercising.
Spoken like someone who doesn't know very much about diabetes, genetic heritage, or any of the important stuff.

This would be an incredible tool.
Score: 7 Votes (Like | Disagree)
lazyrighteye Avatar
15 months ago

An app is fine but the best solution is to prevent diabetes before a person gets it.

For most people, that's watching their diet and exercising.
?

It's an app. On a watch. It's not preventing anything. What it is doing (or looks to do) is offer important data, in what would be a revolutionary way, potentially helping better inform someone about their health. Seems a worthy endeavor to me.
Score: 6 Votes (Like | Disagree)
ctdonath Avatar
15 months ago

I just want something to shock me when I reach for that 5th cookie and this seems like just the device. Maybe it wont be FDA accurate for blood glucose but if im spiking and still eating cookies I want to know.
This.
Implemented in Watch, would have an enormous impact on culture, as millions suddenly became aware of the unseen immediate consequences (but massively problematic later) of their meal-by-meal dietary choices.
Score: 6 Votes (Like | Disagree)
ellpee Avatar
15 months ago
As usual no sources cited anonymous or otherwise, not even a general description of where this information is coming from. But everyone keep believing what Bloomberg tells you.
Score: 4 Votes (Like | Disagree)