Can the chemicals in your brain triggered by emotion harm your brain

say you are always emotional (not that I am )causing your brain to release large amounts of chemicals can those chemicals kill brain cells if over used.

I know Meth releases a surge of dopamine, causing an intense rush of pleasure or prolonged sense of euphoria.
* Over time, meth destroys dopamine receptors, making it impossible to feel pleasure.
* Although these pleasure centers can heal over time, research suggests that damage to users’ cognitive abilities may be permanent.
* Chronic abuse can lead to psychotic behavior, including paranoia, insomnia, anxiety, extreme aggression, delusions and hallucinations, and even death.

I’m simply wondering what amounts of dopamine or adrenalin it would take to do damage to your brain and could a emotional state force enough of that drug into your brain to damage it.

I have a theory that religious people are nothing more then drug addicts, victims to their own brain chemicals causing them to react emotionally to get a fix and thus destroying brain cells.
I’ve noticed that a large majority of religious people cannot understand simple things such as the world not being flat and some real superstitious ones that think that man cannot fly (in airplanes) because the bible says so, or evolution is a lie.
Just really ignorant statements.

OK well thanks for all the help.
Please try and keep the smart ass comments to a minimum I’m sure there will be a few of you =P

drug abuse center