duration of sleep Archives - Amazing Health Advances https://amazinghealthadvances.net/tag/duration-of-sleep/ Your hub for fresh-picked health and wellness info Mon, 09 Jun 2025 02:43:39 +0000 en-US hourly 1 https://wordpress.org/?v=6.8.1 https://amazinghealthadvances.net/wp-content/uploads/2019/08/AHA_Gradient_Bowl-150x150.jpg duration of sleep Archives - Amazing Health Advances https://amazinghealthadvances.net/tag/duration-of-sleep/ 32 32 Nighttime Screen Use Linked to Poorer Sleep Quality & Shorter Duration https://amazinghealthadvances.net/nighttime-screen-use-linked-to-poorer-sleep-quality-shorter-duration-8587/#utm_source=rss&utm_medium=rss&utm_campaign=nighttime-screen-use-linked-to-poorer-sleep-quality-shorter-duration-8587 https://amazinghealthadvances.net/nighttime-screen-use-linked-to-poorer-sleep-quality-shorter-duration-8587/#respond Mon, 09 Jun 2025 05:22:58 +0000 https://amazinghealthadvances.net/?p=17795 Dr. Priyom Bose, Ph.D. via News-Medical – Bedtime screen time cuts sleep by nearly an hour a week and boosts the risk of restless nights, especially for night owls. A recent JAMA Network Open study examines how electronic screen use before bed affects sleep among adults. How does light affect sleep quality? Although adequate and high-quality sleep is crucial for good health, average sleep duration and quality have deteriorated in the past several decades. In fact, one recent study revealed that approximately one-third of adults do not meet recommended guidelines to sleep at least seven to nine hours each night. The eyes contain photosensitive cells in the retina, which is extremely sensitive to light. The absence of light at night increases the secretion of melatonin, a hormone that is essential for inducing the feeling of sleepiness. Thus, exposure to bright light before sleep delays melatonin secretion, thereby increasing sleep latency and disrupting circadian rhythm. Smartphone use and chronotype Smartphone devices use light-emitting diodes (LEDs) for screen illumination. The light intensity in these devices generally peaks in the 450 nm range, which corresponds to the blue spectrum of light that has been shown to negatively affect human sleep. As a result, smartphone users often experience sleep disruptions due to habit of looking at device screens before sleep. To date, most studies have evaluated the effects of electronic screen use on sleep based on adolescent and young adult study participants, partly because this population more frequently uses new technologies. Since adolescents are less sensitive to light-induced sleep disruptions, it is crucial to investigate the differential impact of electronic screen use before sleep among individuals of all ages. About the study The researchers of the current study conducted a cross-sectional analysis on data obtained from the American Cancer Society Cancer Prevention Study-3 (CPS-3) to investigate whether electronic screen use before sleeping affects sleep outcomes. The CPS-3 study cohort comprised both men and women from 35 U.S. states and Puerto Rico. To measure electronic screen use before sleep, study participants were asked to self-report their sleeping patterns. For example, study participants were asked how often every week they watch or read on an electronic screen, such as a smartphone, laptop, or tablet, but not TV. Falling asleep and Waking up Except for weekends and non-workdays, study participants reported the average time at which they tried to fall asleep and wake up. Sleep duration was calculated in minutes, with sleep quality assessed based on Pittsburgh Sleep Quality Index. Chronotype was determined using the Horne-Östberg Morningness-Eveningness Questionnaire. The effect of electronic screen use on sleep was assessed based on prevalence ratios (PRs) using a Poisson regression model. Study findings The current study included 122,058 individuals with a median age of 56 years. Over 89% of study participants were White, whereas 58% and 80% completed a college degree and were women, respectively. About 58% of study participants were classified as morning chronotypes, with less than 6% reporting using an eye mask while sleeping. Approximately 81% of the study cohort reported that their bedrooms were dark enough that they could not see across the room. Over 41% of the study cohort reported the use of an electronic screen every night of the week before sleeping. The remaining study participants either occasionally used electronic screens before sleep or did not use them at all. As compared to the overall population, non-users were more likely to be male or at least 60 years of age. Individuals who engaged with electronic screens daily were more likely to achieve less than the recommended sleep duration. Age- and sex-adjusted models revealed that, as compared to non-users, daily screen users slept a mean of 7.78 fewer minutes. Daily electronic screen users also reported 19.01 minutes later bedtimes on workdays, with these durations fluctuating on weekends and non-workdays. Daily electronic screen use was associated with a 26% increased risk of self-reported poor sleep quality. Fully adjusted models revealed that daily electronic screen users went to bed 18.82 and 19.69 minutes later on workdays and non-workdays, respectively. As compared to study participants who did not report screen time, 33% of those who used electronic screens daily reported poor sleep quality. Individuals with the morning chronotype went to sleep 34 minutes earlier on workdays and non-workdays. However, those with evening chronotypes reported later bedtimes. Conclusions Daily electronic screen use before sleep was associated with 48 fewer minutes of sleep each week. As compared to those with morning chronotypes, individuals with later chronotypes experience poor sleep quality and duration. In the future, additional research is needed to understand the underlying mechanisms through which screen use disturbs sleep. Journal reference: Zhong, C., Masters, M., Donzella, S. M., et al. (2025) Electronic Screen Use and Sleep Duration and Timing in Adults. JAMA Network Open 8(3):e252493. doi:10.1001/jamanetworkopen.2025.2493 To read the original article click here.

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]]> https://amazinghealthadvances.net/nighttime-screen-use-linked-to-poorer-sleep-quality-shorter-duration-8587/feed/ 0 Irregularities in Sleep Timing and Duration Linked With Increased Risk of Hypertension https://amazinghealthadvances.net/irregularities-in-sleep-timing-and-duration-linked-with-increased-risk-of-hypertension-8001/#utm_source=rss&utm_medium=rss&utm_campaign=irregularities-in-sleep-timing-and-duration-linked-with-increased-risk-of-hypertension-8001 https://amazinghealthadvances.net/irregularities-in-sleep-timing-and-duration-linked-with-increased-risk-of-hypertension-8001/#respond Fri, 17 Jun 2022 07:30:45 +0000 https://amazinghealthadvances.net/?p=14711 American Academy of Sleep Medicine via News-Medical – A study of more than two million nights of sleep and blood pressure data found that irregularities in sleep timing and duration were associated with an increased risk of hypertension. Results show that high sleep duration irregularity was associated with a 9% to 15% increase in hypertension risk. Furthermore, a 38-minute increase in sleep midpoint irregularity was associated with an 11% risk increase, and a 31-minute increase in sleep onset time irregularity was associated with a 29% increased risk of hypertension. “This new approach to noninvasive nightly monitoring of sleep duration and timing in people’s homes for an average period of six months each combined with regular blood pressure monitoring has shown us just how important having a regular sleep routine and getting enough sleep is for your health, in this case your heart health,” said lead author Hannah Scott, who has a doctorate in sleep health and is a sleep health research associate at the Adelaide Institute for Sleep Health (AISH), Flinders University. “These novel data shed new light into the restorative benefits of sleep and raise potential concerns for the substantial proportion of shift workers in our modern 24-hour society.” The researchers analyzed data collected over nine months from 12,300 participants who were between 18 and 90 years old. Metrics were recorded with an under-mattress sleep device and a portable blood pressure monitor. Sleep duration regularity was assessed as the standard deviation via device-assessed total sleep time. Sleep timing regularity was assessed as the standard deviation in sleep onset time and in sleep midpoint. Logistic regressions controlling for age, sex, body mass index, and mean total sleep time were conducted to investigate potential associations between sleep regularity and hypertension, which was found in 2,499 participants. “These new insights into the potential adverse impact of irregular sleep timing and duration on heart health further highlight the importance of the role synchronizing the body clock and prioritizing enough sleep opportunity for optimal health and wellbeing.” Danny Eckert, senior author Danny Eckert has a doctorate in sleep and respiratory physiology and is professor and director of AISH. The researchers noted that prior studies of sleep and heart health have been limited in sample size and restricted to a short period of time. The current study investigated associations between sleep regularity and hypertension in a large, global sample over multiple months. This was an unfunded investigator-initiated study. Deidentified data were provided by Withings for unrestricted investigator-led analysis. One of the co-authors serves as a consultant for Withings. To read the original article click here.

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