If you experience anxiety, depression or low self-esteem, you may be more likely to experience paranoid thoughts – or be more upset by them. This may be because you are more on edge, worry a lot or are more likely to interpret things in a negative way. Paranoia is a symptom of some mental health problems.

What amount of paranoia is normal?

Surveys of several thousands of people in Britain, the United States and elsewhere have found that rates of paranoia are slowly rising, although researchers' estimates of how many of us have paranoid thoughts varies widely, from 5 percent to 50 percent.

Is paranoia ever normal?

Paranoid feelings are a normal part of the human experience and are particularly common among people who are vulnerable or at times of extreme stress.