Increasing Metabolism Naturally

What is a food that I can eat that will make me feel less hungry?
I was hoping to find a healthy food to snack on that will make me feel less hungry and increase my metabolism naturally?
Is there a food that meets the criterian?
if you want to control your hunger, use hoodia. it is a natural appetite supressant. I saw an article on today show that was interesting. Apparently bushmen in africa used it for hundreds of years and worked for them.
here is a website i found on google:
http://www.hoodiachallenge.info
HOW TO INCREASE YOUR METABOLISM NATURALLY- RW3 on NBC

Metabolism Masterclass