Great question, Sebastian. Lets look at "natural" factors that improve mood...
Sun - Vitamins B, D, C, K, E, Zinc, Iron & Omega 3s (fish oil) - Exercise -
Now, lets factor in that when a person "juices" he/she cleans the walls of their intestines - thus, making for better nutrient absorbtion. Add nuts to your diet for your source of vitamin E/fats/oils.
Also, consider what may be the root cause of your depression. Is it just temperamental or do you just have a high intake of sweets, alcohol, caffeine, and/or experience lots of stress? Is it mild to moderate or is it severe?
I believe positive changes in habits such as diet, exercise, being social, laughing, and just searching for joys in life you can even alleviate the worst types of depression.
Juicing can be a mental detoxifier of life.
Enjoy!   See 1 other reply

And a "need" to make up for a lack in energy.   See 12 other replies

Great response! Very true... Also, to add, juicing cleans the walls of your intestines and the cleaner the walls of your intestines - the better absorbtion of nutrients. Better absorbtion results in increased energy. When the body has a low or weak absorbtion (common with poor diet), your body/brain feels a "need" to eat more.   See 12 other replies

I'd check out the vitamix. it's industrial and no messy cleanup and very little waste. awesome   See 3 other replies