As a matter of fact, hardly few people really do have “sweet dreams” after people wish them “good night”. The reason is plentiful but it is more important to understand the magnitude of the problem before digging into research.
According to a study conducted by the University of Pittsburgh, centre for Neurosciences and Translational Research, estimates of insomnia prevalence have varied widely, from 10–40%. This problem is demonstrated by the findings of a prevalence study from South Korea. If the symptom of difficulty maintaining sleep was the defining factor, 11.5% of the sample was affected. According to a 2005 statement by the National Institutes of Health, insomnia has a prevalence of 10% if the definition necessitates daytime distress or impairment (National Institutes of Health, 2005).
Given all the information available, the prevalence of insomnia symptoms may be estimated at 30% and specific insomnia disorders at 5–10% (Roth, 2007).
- People of the modern world sleep 20% less than they did 100 years ago.
- More than 30% of the population suffers from insomnia.
- One in three people suffer from some form of insomnia during their lifetime.
- More than half of Americans lose sleep due to stress and/or anxiety.
- Between 40% and 60% of people over the age of 60 suffer from insomnia.
- Women are up to twice as likely to suffer from insomnia as men.
- Approximately 35% of insomniacs have a family history of insomnia.
- 90% of people who suffer from depression also experience insomnia.
- Approximately 10 million people in the U.S. use prescription sleep aids.
- People who suffer from sleep deprivation are 27% more likely to become overweight or obese. There is also a link between weight gain and sleep apnea.
- A National Sleep Foundation Poll shows that 60% of people have driven while feeling sleepy (and 37% admit to having fallen asleep at the wheel) in the past year.
- Research also proves that insomnia is a major cause for infertility and impotency.
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