What “Optimal” Health Is Really Costing You — The Hidden Price Nobody Talks About
Older adults who sleep less than 6 hours per night are at higher risk for dementia and cognitive decline than those who sleep 7 to 8 hours.57 (Deep sleep helps clear beta-amyloid plaques and wash out toxins from our brain, thought to be partially responsible for dementia.)
▶ How much sleep should you get?
Sleep experts agree that 7 to 9 hours a night on average—with at least 7 hours of sleep most nights of the week—is ideal for most.
However, the exact ideal hours may vary person to person.
Generally, the right amount of sleep for you is the amount that allows you to feel relatively refreshed shortly after waking up, and allows you to fall asleep relatively easily at bedtime, with relatively sustained energy throughout the day.
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