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Lack of sleep is a negative factor for health

It doesn't matter how old people are, their stress levels, their race, their education or their income. It didn't matter if they were smokers or not. With all these parameters, the amount of sleep was the most important factor.

Previous studies had already highlighted links between lack of sleep and chronic diseases, premature death, increased risks sickness or traffic accidents.

It doesn't matter how old people were, their stress levels, their race, education or income. It didn't matter if they were smokers or not. With all of these parameters, the amount of sleep was the most important factor.

Previous studies have already highlighted links between insufficient sleep and chronic illnesses, premature death, increased risk of illness or traffic accidents.