1 in 5 Londoners feel anxious a lot of the time while more than 40% feel anxious at least once a week.
Personal relationships cause anxiety for 27% of those in the capital, money worries are the main concern for 43% and welfare of loved ones causes anxiety for around a third.
The revelations come from a survey by the Mental Health Foundation for Mental Health Awareness week.
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Kent Police said they believe the driver had been asked to leave the club following an altercation.
Emergency services were called to South Street in Enfield this morning, but the victim was pronounced dead around 30 minutes later.
Scores of flights were cancelled and drivers were warned to take care as the "mini beast from the east" swept in.