The cognitive health risk of a lack of sleep is trouble focusing and recalling information.
Lack of sleep which is also referred to as Insomnia involves the inability of the body to get enough rest needed by vital organs most especially the brain. During sleep, the brain which helps in the area of retention of information is at a state of rest to ensure it is refreshed and ready for the day's activities.
This is the main reason why sleep is important as a deficiency could lead to trouble focusing and recalling information which is a characteristic of Alzheimer's disease.
Lack of sleep aren't precursors for lung and skin disorders.
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