Dear Mylene, Yes, depression can be a "state of mind" especially if you have every reason to be depressed. Mind over matter, I suppose, can be effective in those instances. I know this discussion is "off-topic", so I will stop. I feel strongly about how the mentally ill are commonly viewed in some circles as lacking the willpower to think their malady away. I regret blurting out my personal view. On a more PD note, this is a very informative website about neurotransmitters, Unit III touches on Dopamine. http://www.williams.edu/imput/synapse/pages/III.html CGJann ---------------------------------------------------------------------- To sign-off Parkinsn send a message to: mailto:[log in to unmask] In the body of the message put: signoff parkinsn