Light and Sleep

Bright light exposure at night can significantly suppress melatonin production, leading to potential health risks, including an increased incidence of certain cancers. The timing of light exposure is crucial, as high cortisol levels are beneficial in the morning, while melatonin peaks at night to promote quality sleep. Even minimal light, such as that penetrating closed eyelids, can disrupt this delicate balance and hinder the body's natural cooling system, which is essential for optimal mitochondrial function.