It could be the sugar alcohols. It also could be a food intolerence. If I eat cheese or any dairy except yogurt or a very small amount of cream cheese, I have the same problem. If you are just starting out and weren't eating raw veggies before the new rouage could be contributing. Examine your diet and see if there is any food that seems to trigger it. You might also try cutting out the typical causes such as dairy, LC foods such as bars, shakes, or candies and so on. Customizing this WOE makes it not only a lot more effective in the weight loss department, but makes it easier to stick to it for life and feel healthy while you are doing it.