My brother is on a ketogenic diet.  It stresses the importance of low carbs and high fat.  Have you ever heard of it?
sure have, I've done it myself. it is really high fat, adequate protein, low carbohydrate.
Yes I tried it a few years ago, as well.  I still try to keep my white carbs in check so I don't have as many sugar cravings.  What other kinds of diets have you tried?
It is useful because the diet forces the body to burn stored fats for energy rather than carbs, you should give it another try, it is all about willpower. I haven't really do any other fad diets.