![]() ![]() ![]() For example, if a person spends 8 hours in bed (from 10 p.m. A normal sleep cycle will go through stages 1-4 before moving into REM. Indeed, insomnia is considered by many sleep studies to be the key risk factor that determines whether a person suffering with post-traumatic stress disorder or major depression will experience suicidal thoughts. Normal sleep efficiency is considered to be 80 or greater. A healthy person will get around 6-8 hours of sleep on average, and in this time. It is unsurprising, therefore, that Denise Pope reports that insomnia in adolescents increases risk-taking behaviour and impulsivity – this would include the impulse to act on suicidal thoughts. Clinical research shows that depriving someone of REM sleep leaves the amygdala 60% more reactive to emotionally charged events. However, if insomnia and nightmares prevent REM sleep from doing the job of reducing cortisol stress hormones and calming emotions from the previous day, the brain’s security officer, the amygdala, is left in a heightened state of arousal. If intense dreaming continues throughout the night, the person wakes up feeling exhausted and lacking in motivation, which researchers – and those who have experienced it – know to be the sleep pattern that characterises depression. It has long been known that worrying and stress increase the intensity of REM sleep, when most dreaming occurs, causing it to start earlier on in the night and reducing the deep sleep needed to repair the brain and body. Regarding your article “ Is sleep a ‘magic pill’ for teen wellness in a mental health crisis?” (8 June), sleep research tells us that good sleep isn’t just about getting enough – the right quality of sleep is key. ![]()
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