Pre-diabetes study finds benefit in brighter days and dimmer evenings

Increased light exposure during daytime is shown to help improve blood sugar control

Boosting exposure to bright light during the daytime and dimming the lights in the evening could help to improve blood sugar control in people with pre-diabetes, data suggests.

Light plays a key role in synchronising the body's internal or circadian clock - which controls the timing of multiple biological processes - to the 24-hour day-night cycle.