Krafferty15, you are invited to the Teahouse
Adding Chemical Imbalances to Causes
Under "Causes" for depression, I think it might be a good idea to add a section on Chemical Imbalances. This is what I thought about adding:
Chemical Imbalances: Many researchers say that depression can be caused by chemical imbalances. This imbalance could either be low levels of the neurotransmitter dopamine or another called serotonin. Low levels of these neurotransmitters have been linked to symptoms of depression. 
I believe that these chemical imbalances could be a major contribution to depression. Because it is being researched I think that this section should be added, but the section will make clear that the causes are still altogether unknown and still under speculation.
Here is the mains source I used: http://drwardbond.weebly.com/1/post/2013/05/depression-low-dopamine-not-low-serotonin.html
Hello, I'm Ronz. I noticed that you made a change to an article, but you didn't provide a reliable source. It's been removed for now, but if you'd like to include a citation and re-add it, please do so! If you need guidance on referencing, please see the referencing for beginners tutorial, or if you think I made a mistake, you can leave me a message on my talk page. Thank you.
A few additional points: The article is about the mood in general, while the reference you provided seems to be about Major depression. More importantly, for medical information, Wikipedia has a higher standard for sourcing as detailed in WP:MEDRS. --Ronz (talk) 21:17, 18 April 2014 (UTC)