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Sleep duration has been declining since the early 90s according to research. [13] Evidence also suggests that teen females, ethnic minorities, and those of low socioeconomic status experience the lowest durations. Puberty is thought to contribute to poor sleep during adolescence as teens undergo physical and social maturation. [14]
Subsequent studies have confirmed these findings, explored the impact of school start times on the sleep needs and patterns of adolescents., [15] and demonstrated a "phase shift" in the release of melatonin at puberty, which appears to be involved in shifting the sleep-wake cycle several hours later during the adolescent years.
The sleep cycle is an oscillation between the slow-wave and REM (paradoxical) phases of sleep. It is sometimes called the ultradian sleep cycle, sleep–dream cycle, or REM-NREM cycle, to distinguish it from the circadian alternation between sleep and wakefulness. In humans, this cycle takes 70 to 110 minutes (90 ± 20 minutes). [1]
NSF is an independent nonprofit organization dedicated to promoting health and well-being through sleep education and advocacy, and it's holding its annual Sleep Awareness Week 2024 March 10 - 16 ...
The sleep cycle of alternate NREM and REM sleep takes an average of 90 minutes, occurring 4–6 times in a good night's sleep. [15] [20] The American Academy of Sleep Medicine (AASM) divides NREM into three stages: N1, N2, and N3, the last of which is also called delta sleep or slow-wave sleep. [21]
A 2023 study published in Sleep found that sleep regularity was a stronger predictor of overall mortality risk than sleep duration. Participants with higher SRI scores had as much as a 48% lower ...
Sleep plays a vital role in regulating metabolism and appetite. When sleep deprived, the metabolic system will be out of balance, which will ultimately affect the dietary choices people make. Teens who are sleep deprived crave more carbohydrates. Sleep deprivation is a risk factor for obesity among young adults. [7] [medical citation needed]
The current formal name established in the third edition of the International Classification of Sleep Disorders (ICSD-3) is delayed sleep-wake phase disorder. Earlier, and still common, names include delayed sleep phase disorder (DSPD), delayed sleep phase syndrome (DSPS), delayed sleep phase type (DSPT), and circadian rhythm sleep disorder. [37]