It is not possible to provide a definitive answer for several reasons. First, there is no accurate survey enumerating Americans with NPD. Second, people with NPD do not recognize that they have a problem (remember they think they are great, wonderful, always right and smarter that everyone else) and so would not answer accurately. It is known that NPD, although rare, is more common in male with estimates that 75% of people with NPD are male.
About 20% of people who are involved in rearend accidents in cars suffer symptoms of whiplash.
It's estimated that about 200,000 people in the US suffer from Tourette's syndrome in 2009, which would be about 6.5% of the population.
187 butts
From what I've researched, between 2.2 and 2.7 million Americans suffer from Schizophrenia. About 1% of the total population.
LOTS of people! no joke..
I would imagine a great deal. Narcissism is an epidemic and it is global.
—It is estimated that 1-6% of the general population suffer from NPD.
They both had extreme cases of narcissism.
3%
1%
1 in every 250 people is anorexic or shows anorexic tendencies in America.
roughly 90% of people suffer from tension headaches
I don't know the exact percentage, but I do know that most of the people who suffer are women.
About 20% of people who are involved in rearend accidents in cars suffer symptoms of whiplash.
The economy would suffer because the people who traveled from a state who had the swine flu and traveled to America and then they will give it to other people here in the United States.
82%
Millions of people in North America do that every day and suffer no bad effects