Modern life is causing "major stress" and sleepless nights, according to the results of two surveys.
Stress can cause sleepless nights
More than half of 1,001 people surveyed by life assurance firm CPP said worries about identity theft, terrorism and health risks kept them awake at night.
Climate change and house prices were also found to make people anxious.
A survey of 1,700 people by Travelodge found 3% of adults get the recommended amount of sleep, with stress cited as the main cause of a restless night.
Results from the CPP poll suggests people feel more worried about a range of issues than they did five years ago.
The number one worry was identity theft, followed closely by rising house prices, climate change, NHS cutbacks and terrorist attacks.
Older people seemed to be more laid back than their younger counterparts with just 9% of people aged over 54 admitting to being deeply concerned about social and global problems compared with 15% of 18 to 34-year-olds.
Among the younger respondents to the survey, rising house prices and climbing onto the property ladder was the biggest worry.
And the younger generation were also more concerned with the threat of terrorist attacks.
Dr David Lewis, a cognitive neuropsychologist at The Mind Lab, said many of the things raised as concerns were outside of people's control.
"The results of this survey, confirm that high levels of anxiety are prevalent in modern society.
"People feel themselves to be helpless.
"Societal anxieties have risen sharply in the last five years and the trend