Apple has long been rumored to be working on noninvasive blood glucose monitoring. Now, a Bloomberg report says the company tested an app that helps people with prediabetes better manage their condition.

Citing anonymous Apple sources, Bloomberg notes the app required Apple employees to validate they were prediabetic via a blood test. Employees then monitored their blood sugar using “various devices available on the market” and logged changes related to what food they were eating.

Prediabetes is a metabolic condition when blood sugar levels are higher than normal, and increases a person’s risk of developing Type 2 diabetes. And while there is no cure for diabetes, prediabetes can be reversed through diet and exercise interventions. The...

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