Slideshow: Can Your Personality Affect Your Health?
Certain types of people, like optimists or extroverts, may have a few health advantages. Find out more about how some personality traits can affect you physically.
Slideshow: Conditions That Can Change Your Personality
Some health problems can affect the way you think and the things you do. Find out more about some conditions that can make you act out of character.
Slideshow: What Are Personality Disorders?
What does it feel like to have a personality disorder? It can be confusing and upsetting to do everyday things like going to the store or asking for a favor. Find out if you have signs of these conditions and what to do if you think you might have one.
Slideshow: How to Recognize and Treat Mood Disorders
Mood disorders can affect all parts of your life, along with your own sense of mental well-being. Find out more about these conditions and what you can do about them.
Slideshow: 13 Things That Scare the Pants Off You
Find out why we get scared -- and why we sometimes like it.