There aren't any magic health foods. There are a lot of ways to eat a healthy diet. Most of them are based on a lot of vegetables (in different varieties), whole grains, pulses such as beans, and (if you like) some meat and dairy. The last is optional but makes certain things easier.

It doesn't act like a video game power-up. It just provides adequate nutrition without overdoing any one aspect. It fills you up without giving you too many calories (the main thing that people overeat).