The central idea in both passages underscores the crucial role of light, specifically sunlight, in regulating our sleep patterns through the production of melatonin. In my discussion, I highlight that melatonin, the hormone responsible for sleep, is primarily activated by the absence of sunlight. I explain, “Sunlight hits our eyes...and this connection of sunlight to the release of melatonin is crucial to keeping us on a healthy sleep schedule.” This emphasizes the dependence of melatonin production on light exposure and the vital importance of natural sunlight for maintaining a consistent sleep routine.
Similarly, Tyler Jackson explores the specific effects of blue light on our circadian rhythms. He points out that “blue light from the Sun is especially prevalent at dawn and dusk,” which is essential for signaling the body to start or stop melatonin production. Jackson also cautions that artificial sources of blue light can disrupt this natural process, potentially leading to sleep disturbances. Together, our discussions illustrate how both natural sunlight and artificial blue light significantly impact melatonin levels, ultimately influencing our sleep-wake cycles.