Does Too Much Sleep Hurt?

We all know not sleeping enough can impact our health.

A lack of sleep may cause stress, anxiety, low energy and lack of concentration. But what about sleeping too much? Is it possible to get an excessive amount of sleep, and if so, is this bad for our health?

The Centers for Disease Control and Prevention (CDC) recommends the following amount of sleep per night:

Sleeping too much may be the sign of an underlying condition. It can also be associated with increased risk of certain health problems.

Why am I sleeping so much?

Everyone has different sleep needs. Some people may sleep more than others. But, if you consistently sleep for more than nine hours per night or have trouble staying awake during the day, consider speaking with your health care provider. Some conditions increase the amount of sleep you need. These include:

• Idiopathic hypersomnia, a condition that causes excessive sleepiness for unknown reasons

• Narcolepsy, a condition that causes sudden periods of excessive sleepiness

• Delayed sleep phase syndrome, a condition that causes disrupted sleep due to changes in circadian rhythm

What is sleep quality?

How long it takes to fall asleep, how many times you wake up and the total amount of time you spend awake each night are all measures of sleep quality. Poor quality sleep may leave you feeling tired and low energy all day, even if you spent many hours in bed. There are some health conditions that may impact the quality of your sleep. These include:

• Sleep apnea

• Restless leg syndrome
• Teeth grinding, also known as bruxism
• Chronic pain
• Some medications

Consider some of these tips for quality sleep:

• Stick to a regular sleep and wake time, even on weekends
• Avoid large meals, coffee, alcohol, caffeine and nicotine in the hours before bedtime
• Get regular physical activity, but don't exercise intensely within 90 minutes of bedtime
• Set the mood — a dark, quiet room, a cool temperature, and a comfortable bed
• Keep your TV, cell phone or any other bright screen turned off

Is too much sleep bad for my health?

Some evidence suggests that regularly sleeping more than the recommended amount can impact your health, even if you do not have one of the conditions above. Excessive sleep may be associated with higher rates of depression, obesity and diabetes. While more research is needed to determine if too much sleep causes these conditions, aim for seven to nine hours of sleep per night to stay healthy. If this is difficult to achieve due to too little or too much sleep, discuss it with your health care provider.

Updated May 2021

Sources