For years, researchers have observed that people who live at high elevations, where oxygen is scarce, tend to develop diabetes less often than those at sea level. Although the trend was well documented, the biological explanation behind it was unclear

The study, published in the Journal of Alzheimer`s Disease, was conducted in mouse models and revealed how `Muller glia`, or retinal support cells, respond to the earliest stages of the disease and undergo significant cellular and structural changes before other symptoms of the neurodegenerative condition appear