There are about 10-20% of people that suffer from insomnia in the United States, and about the same rate of severe sleeplessness occurs in Europe. But the survey that has been conducted in the beginning of this century reported even worse statistics on sleeplessness in the United States:
- Only 35% of Americans slept eight hours or more per night during the work week.
- About 56% had one or more symptoms of insomnia a few nights a week or more.
- Approximately 60% children, especially teenagers, reported of being tired during the day.