A recent study from Norway has highlighted the potential impact of mobile phone usage at bedtime on sleep quality. The research, which examined over 45,000 young adults aged 18 to 28, found that spending just one hour on a smartphone before sleep can increase the risk of insomnia by 59% and reduce total sleep time by approximately 24 minutes.
Interestingly, the study suggests that the effects of social media use on sleep may not be as detrimental as previously thought, indicating that watching television, movies, or even reading on mobile devices can have similar impacts. While the role of blue light emitted from screens has been debated, it is generally accepted that exposure to bright light prior to sleep can disrupt circadian rhythms and melatonin production, potentially leading to poorer sleep quality.
The findings align with broader concerns regarding sleep among American adults, where about 33% report fair or poor sleep quality. Only 35% achieve the recommended eight hours of sleep each night. The study's senior author, Børg Sivertsen, noted that students who primarily use social media had lower rates of insomnia compared to those engaging in a variety of screen activities.
However, experts caution that the influence of social media and other screen activities on sleep is complex, with individual differences in responses to light exposure and varying levels of engagement with social media potentially complicating outcomes. Recommendations for better sleep hygiene include limiting screen time before bed, utilizing blue light filters, and maintaining a consistent sleep schedule to enhance sleep quality.