Longevity expert Dr Vass explains how light exposure affects our metabolism: ‘Light is a metabolic signal’

Dr. Vassily Eliopoulos states light is a metabolic signal that regulates metabolism, hormones, appetite, and energy.

Morning sunlight helps set circadian rhythm, boost cortisol, regulate insulin sensitivity, and synchronize appetite and fat-burning signals.

Bright light at night, especially blue light from screens, inhibits melatonin, reduces glucose tolerance by up to 50%, and increases late-night cravings.

Circadian mismatch from wrong light timing leads to increased fat storage, slower metabolism, and disrupted hunger hormones.

Night shift workers exposed to blue light face 25-40% higher metabolic risk.