Maybe it's because I grew up using those things but it doesn't slow me down one bit!!

That was my original reason for using chopsticks. As I've gotten better with them, though, it doesn't work so well as a weight loss technique. After reading the nine principles of the diet on link 3 there, I have to say that the use of chopsticks is quite possibly the least important. The foods you eat take precedence over how you eat them, and traditional east Asian diets tend to be low in red meats. As Eastern diets have become Westernized — I'm looking at you, China — Eastern bodies have begun appearing more like ours. Greater variety has led to increased height, but more fats has led to..well…more fat. And I'm fairly certain it's not due to decreased chopstick use.