5 Health Risks of Sleeping too Much

By  ,  Onlymyhealth editorial team
Apr 30, 2015

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Quick Bites

  • People who sleep a lot are at risk of depression.
  • The brain could suffer impairment issues.
  • Problems in conception may occur.
  • Arteries could be damaged.

Oversleeping seems like a distant dream when falling asleep takes half of your night. But, the truth is that some people do oversleep. Although there are no theories to suggest the right amount of sleep, it is believed that most adults must sleep for seven to nine hours at night.

However, if you fall under the category of those who need more than nine hours of sleep to get their body functioning again, here is some bad news for you. There is a whole list of health problems associated with sleeping too much.

Harmful Effects of Over Sleeping

Depression Risk

A study conducted on adult twins in 2014 helped the researchers to find that long sleep durations can increase risk of depression symptoms. The participants of the study who slept between seven and nine hours at night showed 27 percent heritability of depressive symptoms, while participants who slept more than nine hours had 49 percent heritability.

Impairment of the Brain

A study in 2012 on elderly women showed that oversleeping could hamper functioning of the brain over a six-year course. Women who slept for more than nine hours regularly had changes in their brain at par with aging two years.

Conception Problems

A Korean team of researchers analyzed sleeping habits of over 650 women who were undergoing in virto fertilization. It was found that women who slept for seven to eight hours at night were more likely to conceive than women who slept for nine to 11 hours.

Harmful Effects of Over Sleeping

Diabetes Risk

A study from Quebec found that people who sleept for more than eight hours at night were twice as likely to develop type 2 diabetes or a malfunctioning glucose tolerance over a six-year period. On the other hand, people who slept between seven and eight hours at night showed no signs of being at risk, even after controlling differences in body mass.

Poor Heart Health

Research presented at a 2012 American College of Cardiology meeting showed that sleeping for eight or more hours every night could cause an increased risk of heart problems. In this research, data from over 3000 people were analysed. It was found that people sleeping for long hours were twice more likely to be at the risk of angina and 1.1 times more likely to be at the risk of coronary artery disease.

Image source: Getty Images

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