When people start cleaning up their diet they feel better & have more energy. This is not because of the "super foods" they are eating, or because of the vitamins & minerals they are getting, but because they body no longer has to fight against the acid & mucous-forming foods they once ate (meat, dairy, grains, neurotoxins, pesticides, GMO, salt, etc.). It's not as much about what you are eating, but what you are not eating. This gives the body a chance to alkalize, detoxify, & regenerate itself at the cellular level. Of course we need organic fruits & vegetables to nourish our cells & give us energy, but the foods aren't what heal us. I could go on all day, but instead will drop some book titles for those who are interested.
I've personally experienced many positive results with a low-fat raw vegan diet with regards to healing, mental clarity, energy, weight loss, spirituality, digestion, relationships, productivity, well-being, recovery time from exercise, reversing depression, & more - way more than I expected. If you're interested in any of this stuff at all, but don't know where to start - please check out the following books!
The Detox Miracle Sourcebook by Dr. Robert Morse
The 80/10/10 Diet by Dr. Douglas Graham
Mucusless Diet Healing System by Arnold Ehret
Alkalize or Die by Dr. Theodore A. Baroody
The China Study