How Much Sleep Is Too Much? Sleep needs can vary from person to person, but in general, experts recommend that healthy adults get an average of 7 to 9 hours per night of shuteye. If you regularly need more than 8 or 9 hours of sleep per night to feel rested, it might be a sign of an underlying problem, Polotsky says.
Most people know that skimping on sleep can be bad for you. Regularly getting too little sleep is linked to a number of chronic diseases, not to mention irritability and sluggishness during the day.
But did you know that sleeping too much could also be problematic? Oversleeping is associated with many health problems, including:
Type 2 diabetes
Heart disease
Obesity
Depression
Headaches
Greater risk of dying from a medical condition
Does that mean sleeping too much will make you sick? Not necessarily, says Vsevolod Polotsky, M.D., Ph.D., a professor of medicine at Johns Hopkins Medicine. “We don’t exactly know the cause and effect,” he says. “It probably works the other way, that when you are sick, it leads to more sleep time.”
Does sleeping too much actually contribute to illness, or is it a sign of an existing condition? Either way, if you find yourself always nodding off or looking for the next nap, it might be time to see your doctor.
How Much Sleep Is Too Much?
Sleep needs can vary from person to person, but in general, experts recommend that healthy adults get an average of 7 to 9 hours per night of shuteye.
If you regularly need more than 8 or 9 hours of sleep per night to feel rested, it might be a sign of an underlying problem, Polotsky says.
What’s Making You So Tired?
A number of conditions can disrupt sleep or interfere with the quality of your slumber, leading you to feel tired and sluggish even after spending 8 hours in bed, says Polotsky. Those conditions include:
Sleep apnea, a breathing disorder that causes brief pauses in breathing during sleep
Restless legs syndrome, a brain disorder that causes an unpleasant and sometimes overwhelming urge to move your legs when you’re at rest
Bruxism, in which you grind or clench your teeth during sleep
Chronic pain
Certain medications
Then there are conditions that don’t significantly impair the quality of your sleep, but increase the amount of sleep you need. Those include:
Narcolepsy, a brain disorder that interferes with the body’s sleep-wake cycles
Delayed sleep phase syndrome, a disorder in which your circadian rhythm, or biological clock, keeps you up into the wee hours, making it hard to wake in the morning
Idiopathic hypersomnia, a disorder that causes excessive sleepiness for unknown reasons
Fortunately, there are treatments for many of these conditions, which can help improve the quality of your sleep.
Having a Sleep Study
Many people find themselves sleeping more as they get older, and assume it’s a normal part of aging, Polotsky adds. But getting older shouldn’t change your sleep needs dramatically.
If you’ve ruled out those conditions and are still hitting the snooze button after 9 hours under the covers, it might be a clue that you have an underlying medical condition such as heart disease, diabetes or depression.
If you’re an oversleeper, Polotsky recommends checking in with your doctor. He or she might recommend a sleep study to rule out sleep disorders. “You should seek professional help from a sleep center,” he says.
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