Physiological effects of light

Light influences our body’s internal clock, known as the circadian rhythm, regulating sleep, alertness, and hormone production. Natural light, especially in the morning, helps maintain this rhythm, enhancing mood and cognitive function. Conversely, exposure to artificial or blue light at night can disrupt sleep patterns, reduce melatonin (sleep hormone) levels, and impair overall health. Light also impacts eye health and can influence mood through its effect on brain chemicals. Proper exposure to natural light during the day supports alertness and well-being, while minimizing exposure to intense light at night promotes better sleep and hormonal balance.