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Apple CEO Tim Cook Spotted Testing Apple Watch-Connected Glucose Monitor

Apple CEO Tim Cook has allegedly been spotted testing a prototype glucose monitor that's connected to his Apple Watch, reports CNBC. Cook, who is said to be aiming to understand how his blood sugar is affected by food and exercise, has been seen wearing the device around the Apple Campus.

Cook also mentioned the glucose monitor in a February meeting with students at the University of Glasgow. It's not clear if the device he spoke of in Glasgow is the same one he's been wearing around the Apple campus.
"I've been wearing a continuous glucose monitor for a few weeks," he said. "I just took it off before coming on this trip."

Cook explained that he was able to understand how his blood sugar responded to foods he was eating. He made modifications to keep his blood sugar more constant.
Current continuous glucose monitoring systems require a small sensor that's worn under the skin to monitor glucose levels. Advanced systems from Dexcom include a transmitter, which can display glucose information directly on an iPhone or Apple Watch.

An iPhone-connected Dexcom continuous glucose monitoring system

Rumors have suggested glucose monitoring is the next major health issue Apple is aiming to tackle. The company is said to have a team of biomedical engineers working on developing sensors for non-invasively monitoring blood sugar levels. Apple is allegedly working on a continuous monitoring solution that would not require an under-skin sensor.

Apple's glucose testing is reportedly far enough along that the company has started conducting feasibility trials at clinical sites in the San Francisco Bay Area, and consultants have been hired to sort out regulatory issues.

According to a recent rumor from BGR, Apple could be planning to add a non-invasive glucose monitoring sensor to a future version of the Apple Watch, perhaps through the addition of a smart band that would add functionality to the Apple Watch without requiring the sensor to be built into the watch.

Cook has said in the past that Apple does not want to put the Apple Watch through the FDA approval process, something that would need to happen for Apple to introduce a glucose monitor, so a modular add-on smart band could be an ideal solution for adding more advanced health tracking features without subjecting the Apple Watch itself to FDA oversight.

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Top Rated Comments

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20 months ago
Medical and fitness uses are still the best use cases for the Apple Watch. It would be wonderful if one day it could also reliably detect heart problems before a heart attack.
Rating: 19 Votes
20 months ago

Good guy Tim Cook and his glucose monitor. Glucose monitors are the next big thing (tm) and a must have if you want to be cool, just like good guy Cook. However, an alcohol level monitor would certainly be useful to more people, including hipsters.

I can't find anything of value in this entire post.
Rating: 15 Votes
20 months ago
They may be trying to avoid FDA on the watch, but any glucose monitoring 'device', even if built within a strap, will need some serious regulatory approvals, trials and evidence before it could be used for medical purposes.

And I hope they're doing that, because this is really exciting.
Rating: 14 Votes
20 months ago
So where them pics at if he was spotted with it
Rating: 14 Votes
20 months ago
Take my money and I'll help test this!!!
Rating: 9 Votes
20 months ago
This breakthrough will translate in hundreds of millions of Watches (and iPhones) sold.
Rating: 8 Votes
20 months ago
Buy stock in pharma when these hit the market. 80% of all type 2 diabetes cases are undiagnosed.
Rating: 7 Votes
20 months ago
Tim is looking quite good these days..
Rating: 6 Votes
20 months ago

Current continuous glucose monitoring systems require a small sensor that's worn on the stomach under the skin to monitor glucose levels.


Just to nit-pick... it can be worn anywhere. Since it's invasive, it needs to be moved around regularly since the skin gets irritated and scars slightly at each insertion point.

Source: My wife, who's a diabetes educator, type II diabetic, and has worn various glucose monitors (and insulin pumps, for that matter) for much of the past decade.
Rating: 6 Votes
20 months ago

this seems really cool if you have some medical condition where you need to monitor your glucose level.

Little worried though that otherwise healthy people will start becoming obsessive over stuff like this when it's not really necessary to be monitoring your glucose at all times.


As already mentioned, many people have type 2 diabetes without knowing it. It would be a transformative thing if people could be easily alerted by their Watch that they should consult their doctors because their blood glucose levels were remaining too high. It could literally extend millions of people's lives.

Of course that would be the non-invasive kind that really makes the difference, but even the more invasive kind is a step towards that goal. Also I think there are worse things for people to obsess over than data about their own health/bodies. But sure, everything in moderation and all that.
Rating: 6 Votes

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