Hi,
I found some information about BDNF [brain-derived neurotrophic factor] that I wanted to share with you: http://www.optimallivingdynamics.com/blog/21-proven-ways-to-increase-your-brains-growth-hormone. It says:
"BDNF protects and repairs your brain cells, increases the growth of new brain cells, and improves learning, memory and mood. In fact, many researchers consider it a natural antidepressant"