Seven hours’ sleep is ideal amount in middle to old age, study finds
by Hannah Devlin Science correspondent from Science | The Guardian on (#5YNCW)
Too much and too little sleep linked with worse cognitive performance and mental health
Seven hours of sleep each night is the ideal amount in middle to old age, research suggests.
The study of nearly 500,000 adults aged between 38 and 73 found that both too much and too little sleep were linked with worse cognitive performance and mental health, including anxiety and depression. A consistent amount of sleep also appeared to be beneficial.
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