Impact of Screen Light on Melatonin Levels and Sleep in Young Adults

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A study on the impact of screen light on sleep in young adults found that exposure to a bright screen before bedtime led to a suppression of melatonin levels compared to exposure to a dim screen. Melatonin levels should naturally rise before bedtime, but this rise was not as significant when individuals viewed a bright screen. The study used various measures including subjective ratings of sleepiness, EEG, eye blinks, and melatonin levels, highlighting the negative impact of bright screens on melatonin production and sleep quality in young adults.

In today's podcast episode, Matt welcomes back Dr. Michael Gradisar to delve into the evolving understanding of screens and sleep. Initially holding the belief in the detrimental effect of screen light on sleep, Matt finds this notion challenged by Dr. Gradisar's research, which emphasizes a more nuanced perspective. Their discussion highlights the shift from simplistic concerns about screen use to acknowledging the multifaceted influences on sleep, including content and individual differences.

Dr. Gradisar's experiments, such as exposure to violent video games and bedtime displacement monitoring, emphasize the complexity of the relationship between technology use and sleep, stressing the need for personalized approaches to addressing sleep issues. His dialogue with Matt underscores the importance of scientific inquiry in challenging and refining commonly held beliefs about technology and sleep, advocating for a nuanced understanding that considers individual behaviors and differences. Furthermore, both speakers encourage researchers to engage with industry and the public, translating findings into practical advice for improving sleep hygiene and promoting healthier sleep practices.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.

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As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

Links:

Wink Sleep: https://winksleep.online/

Michael Gradisar LinkedIn: https://www.linkedin.com/in/michael-gradisar-ba2184b6/?originalSubdomain=au