Notes from this ted talk:
Here's her list for improving neurogenesis in the hippocampus for improving mood and memory:
(she left out heat baths)
omega-3 oils (fish oil, canola)
food that needs more chewing
vit A, vit D, vit B's, vit E, zinc, folic acid, caffeine, no saturated fat
She mentioned also resveratrol and curcumin, but these are only in animal models. These do not make it to the brain in humans in any formulation, certainly not in the concentrations that have been found to work in animals.