Apple Watch 'Many Years Away' From Non-Invasive Glucose Monitoring

Apple's attempts to develop a non-invasive glucose monitoring feature for Apple Watch remains "many years away" from debuting, despite over 15 years of work to make the capability a reality in a consumer device, according to Bloomberg's Mark Gurman.

apple health app
The idea of a non-invasive glucose monitor originated in Apple's Steve Jobs era, with the aim to include an Apple Watch sensor that can inform users if they are pre-diabetic so that they can take proactive steps and potentially reverse the condition. Prediabetes is a warning sign that blood sugar levels are higher than normal, but not yet high enough to be diagnosed as diabetes. An early diagnosis allows for early intervention through lifestyle changes to prevent or delay the progression to full-blown type 2 diabetes.

Bloomberg previously reported that Apple has tested a health-focused app aimed at diabetes prevention. Last October, Gurman said that the app could help inform some of Apple's future products related to blood sugar management, but that it wouldn't necessarily become a consumer-facing product.

Most blood sugar tests that people currently use require a skin prick, but Apple has been trying to develop a method that uses optical absorption spectroscopy and lasers to determine the concentration of glucose in the body without puncturing the skin. Apple has reportedly been developing a silicon photonics chip that uses optical absorption spectroscopy to shine light from a laser under the skin to determine the concentration of glucose in the body.

In 2023, Apple's blood glucose monitoring development reportedly reached a proof-of-concept stage culminating in a functional prototype device, but it was still way too large to incorporate into a device the size of the Apple Watch. Apple is said to have hundreds of engineers in its Exploratory Design Group (XDG) working on the project.

Over the weekend, Gurman also said that Apple is considering offering a new AI-powered health coaching feature that offers personalized health recommendations and lifestyle improvements via a "coaching feature." The feature could eventually be part of a future Apple Health+ service, according to the report.

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Top Rated Comments

neuropsychguy Avatar
3 weeks ago
This is one of the Holy Grails for the Apple Watch. Once the engineers figure this out will be absolutely huge with health benefits.

It's not particularly hyperbolic to say that engineering a non-invasive way to monitor blood glucose, have it fit in a reasonably-sized watch, have it reasonably-priced, and have it clinically accurate is akin to the Apollo program. Possibly even more challenging because this is dealing with human microbiology in real world situations.

Fairly recent summary of what's been done so far: https://pmc.ncbi.nlm.nih.gov/articles/PMC10331674/
Score: 25 Votes (Like | Disagree)
MacFan23 Avatar
3 weeks ago

This list a lot of issues, and points out that while it may be possible it may not be clinically accurate.
I think like with other things Apple watch, it just needs to be good enough.
If it can give someone a warning who otherwise would be oblivious, that's probably good enough at this point.
Score: 20 Votes (Like | Disagree)
Big_D Avatar
3 weeks ago

This is one of the Holy Grails for the Apple Watch. Once the engineers figure this out will be absolutely huge with health benefits.

It's not much hyperbole to say that engineering a non-invasive way to monitor blood glucose, have it fit in a reasonably-sized watch, and have it clinically accurate is akin to the Apollo program. Likely even more challenging.

Fairly recent summary of what's been done so far: https://pmc.ncbi.nlm.nih.gov/articles/PMC10331674/
In the meantime, why not work on it further as a medical device that can be used by doctors or a larger, hand-held device for diabetics? If they concentrate on the accuracy at the current size, they could replace invasive glucose monitors for diabetics and use the money to help fund size reductions, so that it fits into a Watch in the future?
Score: 13 Votes (Like | Disagree)
Luis Ortega Avatar
3 weeks ago


It's not much hyperbole to say that engineering a non-invasive way to monitor blood glucose, have it fit in a reasonably-sized watch, and have it clinically accurate is akin to the Apollo program.
Yes it is.
Score: 10 Votes (Like | Disagree)
Expos of 1969 Avatar
3 weeks ago
Will Siri be in charge ?
Score: 9 Votes (Like | Disagree)
Pezimak Avatar
3 weeks ago
It will be a true game changer, I was recently diagnosed with type 2, but I am changing my lifestyle and hope to reverse it, doctor said it was possible. So this feature would be extremely useful.
Score: 9 Votes (Like | Disagree)