Q: I was able to get from a body fat percentage of 27% to 18% while eating an average of 1.5 medium chocolate bars a day.Does this mean that chocolate is not fattening or is it my genetic predisposition to being thin which allowed me to eat junk while losing weight.

A: It's impossible for me to comment on that without knowing more about the rest of your diet (hopefully chocolate wasn't the only thing you ate!) and the exercise program (if any) that you followed. However, I can definitely tell you that chocolate IS fattening and that you could have had the same or better results faster if you had a cleaner diet.

I can also tell you that if you are interested in dropping your BF% further that it will be more and more difficult. Assuming you are a guy, you went from signficantly overweight and even obese to about average. That is a relatively easy thing to do and can be accomplished any number of ways, not all of them optimal obviously. Continuing your fat loss much past your present point will be more and more difficult and will require cleaner diet and good exercise programs. Your good genetic predisposition may be there, but it alone is very unlikely to get you to, say, 10% body fat. Having said all that, good job dropping those 9% of body fat already!