Apple CEO Tim Cook reportedly has been testing a glucose monitor connected to his Apple Watch to understand how his blood sugar responds to factors like food and exercise.
CNBC has reported last month that Apple has a team dedicated to the "holy grail" in diabetes: Non-invasive and continuous glucose monitoring.
Cook also talked about the device to a roomful of students in February at the University of Glasgow, where he received an honorary degree. He didn't say if it was a medical device from a company like Medtronic or Dexcom, or an Apple prototype.
"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.
Cook recently told CNBC's Jim Cramer that he has lost 30 pounds.
It isn't yet clear if the device will be embedded into a future version of the Apple Watch, or if the finished product will be designed to be worn separately, the International Business Times reported.
“Current trackers use tiny sensors which penetrate the skin to get a reading, but it is hoped that Apple's solution will negate the need for this. Cook told the students in February how the device alerted him to changes in blood sugar levels in real time, helping him adjust his food intake during each day,” IBT reported.
To be sure, Cook also may be seeking a way to rejuvenate interest in the Apple Watch, Reuters recently reported.
More than two years after unveiling the Apple Watch with apps and styles that tried to appeal to every need and every customer, Apple has honed its marketing strategy, debuting a second generation product aimed squarely at the health and athletic audience.
The focus on fitness will enhance the watch's appeal to its core audience but also cements its status as a niche device, analysts said.
“Apple is responding to what has resonated with customers,” said analyst Jan Dawson of Jackdaw Research. “The problem is there are only so many people who want to wear a health and fitness device. If they want this to be really massive, they’re going to have to go broader.”
The first new device released under Cook, the Apple Watch has not attracted a mass audience, selling 1.6 million units in the second quarter 2016, down more than half from a year ago, in the run-up to the new version, IDC data showed.
Apple's original pitch touted the ability to send doodles, make phone calls and track fitness, while the company described it as essentially a fashion accessory.
Meanwhile, Apple's next iPhone reportedly will break the $1,000 barrier and send the stock soaring, Goldman Sachs predicts.
Goldman Sachs predicts the higher-priced iPhone 8 will drive earnings above expectations.
The firm reiterates its buy rating on Apple and raises its price target to $170 from $164.
Apple stock was trading at about $153.38 near midday Friday.
(Newsmax wires services contributed to this report).