Some people suffer from bipolar disorder, others with depression, anxiety, schizophrenia, OCD, paranoia, hoarding disorders, eating disorders, addictions, etc, there are so many out there I would assume everyone has a little of something.
How many people have mental disorders?
I'm actually one of them. I've had OCD and ADHD since I was a small child. And I suffered from Anorexia in my teenage years.
Me bi polar severe depression
Prevalence of mental disorders
https://en.wikipedia.org/wiki/Prevalence_of_mental_disorders
Sadly, according to some statistics, 90 percent of those who commit suicide have some kind of mental, emotional, or addictive problem.
All of them.
Very few, and that's not a joke.