India, Jan. 11 -- An international team of researchers has provided the first direct evidence that exposure to natural daylight, as opposed to artificial light, has beneficial effects on people with type 2 diabetes, improving blood sugar regulation and overall metabolic health.

Metabolic diseases have reached epidemic levels globally, driven by sedentary lifestyles and circadian misalignment-a disruption between the body's internal biological clocks and environmental cues such as light and darkness. Compounding the problem, people now spend nearly 90 percent of their time indoors, with limited exposure to natural daylight.

To investigate the role of daylight in human metabolism, particularly glycaemic control, researchers from the Unive...