Coffee does it cause or decrease depression?

OK, all you coffee drinkers get excited but not too excited and do not increase your current consumption of more than 2-3 cups of coffee a day routine.
Let us talk about the recent studies, “Coffee and Depression: Coffee as an Anti-depressant? “Coffee may prevent depression scientist say”.
Sounds great.  Good news!
Now for the Bad news! There are just as many studies that say, “The hidden dangers of caffeine: How coffee cause exhaustion, fatigue and addiction”, “Coffee and depression – a cause and also a remedy”.
The recent study from Harvard indicates that coffee “acts like an anti-depressant by accelerating the neurotransmitters such as serotonin, dopamine and noradrenaline”. But in simple terms they refer to the hormones in your brain that keep you energetic, happy and healthy.
It affects your neurotransmitters. It provides a burst of energy and increases your serotonin, which anti-depressants increase if you are low in this hormone.  It also increases your endorphins’ to push yourself through the day, although exercise also has this affect.
Watch out. There is a crash coming in a few hours later and temporarily ends the burst of energy. It can lead to exhaustion.  Coffee consumed too late in the afternoon may lead to the sleep problems and depravation.
The good new! A Harvard longitudinal study from 1988-2008 with over 200,000 men and women and a previous study of about 130,000 nurses in 1993, found that coffee drinkers were 1/3 less likely to commit suicide having an anti-depressant affect.  Another Harvard study, hoping to dispute the study on nurses found the aforementioned to be true.
Psychiatrists point out depression is a serious medical issue and cannot be resolved by simply by drinking coffee.
Coffee drinkers, of which I am one, can drink our coffee just drink it in moderation.  It does have a mild anti-depressant effect on our neurotransmitters.