I am depressed a lot, i dont know why or how it happensdepression is a state of low mood, what about you?
I'm the opposite, very rarely depressed. Why are you feeling so depressed?
I dont know, maybe its just depressed mood, not depression maybe i have dysthymia 
hmmm i see, could it be because of the environment you are in ?
Probably, dysthymia is a persistent disorder with similar problem as depression, but less severe symptoms 
Maybe your lacking certain chemicals in your brain, I know your research is proving that some people are deficient in certain brain chemicals. 
First thing i think i have to do is take some antidepressants, those are drugs used for the treatment of major depressive disorders
Wow, are they very strong ? Also do they make you numb emotional ?
yes i am scare to use them, maybe first try with some therapies like behavior therapy or some medical devices
That's a good start, you can also taste some tests by your doctor to see if your T levels are low.