There is nothing that will "block" carbohydrates.

Carbohydrates do not make you fat. How many obese Asians do you know? They eat white rice and noodles at almost every meal. Not that disgusting brown rice or whole wheat noodles either. Simple carbs.

Too many calories in and not enough activity make you fat.

Increasing activity can boost you metabolism. Muscle weighs more than fat but also burns more calories than fat.

Simple. Eat less. Exercise more. Eat a well balanced diet of carbs (breads,fruits and veggies) and protein and a bit of fat and even sugar.

Unless you are a diabetic. Then follow you dietitian's orders.

Wildchild has a few valid points actually. Women eat too many carbs which is why we gain the weight so easily. Men tend to eat more protien. It's just the way we are. Complex carbs are better for you in that they have way more fiber and fill you up faster. It's okay to eat the white stuff, you just have to be careful how much white stuff you eat. Yes, Asians do eat white rice and yes I've seen a LOT of fat Asians. Trust me on that one! They don't eat a lot of potatoes, or white bread. They eat servings of rice and servings of noodles. Not big humungous super sizes of these things, that we tend to do. They eat smaller portions more often through the day. Which is what we should be doing. Instead of just breakfast, lunch and supper, (3 big meals) have smaller meals and break it into six meals a day. Eat until satisfied, not full and certainly not stuffed. Eat off of a smaller plate, it looks fuller and after a while you won't notice your serving size has shrunk. Read the packages for fat content, and more so: salt content. I don't eat anything that has more than 10% of my daily allowance of salt. Watch the fat free foods. Fat is replaced with sugar so you want to weigh in what's best for you. Fat or sugar?

Muscle weighs exactly the same as fat. A pound is a pound is a pound. BUT, it takes less muscle to make that pound than it does fat. You know one rock can weigh a pound, but a room full of feathers is what it takes to make a pound. Same idea.

I've been on WW's for over a year. I learned one thing from them that you don't need to spend much money one (like I did). Buy a few Diabetic magazines. Read their articles. Weight Watchers leans very much towards a diabetics diet. Whole grains, heart healthy foods, exercise, sleep.