Today more than 500 million people have diabetes, an autoimmune disease that causes the pancreas to produce little or no insulin, leaving sufferers unable to regulate the glucose in their bodies and bloodstreams. It’s one of the most prevalent and fastest-growing chronic medical conditions in the world, expected to affect more than 740 million people by 2045. And when it’s unmonitored and untreated, it can quickly become life-threatening.

A version of this article appeared in the September–October 2024 issue of Harvard Business Review.