This would include white bread in any form, white rice, and white pasta. You also want to avoid white potatoes and anything with sugar added. An even simpler guideline is that nature makes very few white coloured foods naturally. Anything that is white in colour has very likely been processed to look that way and thus should be avoided. Healthy foods usually come vibrant colours of brown, green, orange, red, etc.
Breads Be careful when trying to buy whole grain breads at the supermarket.
And don't think that bagels or french baguettes are any healthier than Wonder Bread. Crackers Same advice as the bread. Rice Rice is not a good grain for losing weight. It has a glycemic index of 88 which is higher than table sugar and many candy bars. This also makes those lovely rice cakes one of the worst things you can eat if you're trying to lose weight.