Serotonin, melatonin, and cortisol are all hormones that are involved in regulating various physiological processes in the body, including sleep-wake cycles. Artificial light can affect the production of these hormones in different ways:
- Serotonin: Serotonin is a neurotransmitter that is involved in regulating mood, appetite, and sleep. Exposure to bright light, especially in the morning, can increase serotonin levels in the brain, which can help improve mood and promote wakefulness.
- Melatonin: Melatonin is a hormone that is involved in regulating sleep-wake cycles. It is produced by the pineal gland in the brain in response to darkness and helps to promote sleep. Exposure to artificial light, especially blue light emitted by electronic devices such as smartphones and computers, can suppress the production of melatonin and disrupt the sleep-wake cycle.
- Cortisol: Cortisol is a hormone that is involved in regulating stress and the sleep-wake cycle. It is produced in response to stress and is typically highest in the morning, helping to promote wakefulness. Exposure to artificial light, especially at night, can disrupt the cortisol rhythm and interfere with the natural sleep-wake cycle.
In summary, artificial light can affect the production of serotonin, melatonin, and cortisol, which can turn into impact mood, sleep, and overall health. Exposure to bright light in the morning can help regulate serotonin and promote wakefulness, while exposure to artificial light at night, especially blue light, can disrupt the production of melatonin and interfere with sleep. Artificial light can also disrupt the cortisol rhythm, which can lead to sleep problems and other health issues.
