Fat Substitutes & Diet Soda

Just because you're choosing low-fat foods or diet foods doesn't mean you're safe from weight gain, either. Everything depends on the type of foods. Synthetic fat substitutes like Olestra, which is used in light snack chips like Pringles, have made lab rats gain weight and then not lose that weight, and diet sodas have also caused weight gain in test cases.

These foods apparently trick the body into expecting something highly caloric, then it doesn't get it, so the hunger pangs aren't satisfied.

"Health Food"

You mean well, but shopping at the health food store or the fancy times wholesome market doesn't mean you're safe from gaining weight. You can still buy fattening beer at Whole Foods, and organic cheesy poofs are still cheesy poofs (and by the way, they're made from that omnipresent ingredient corn). Granola and other sweet cereals can add a lot of calories; nuts, natural peanut butter and cashew butter can be high in fat.

The bottom line is: read the labels, be informed and just don't go crazy out there.

Read More:

The Conspiracy To Control Our Drinking Water

Blind Side: How the FDA Fails to Keep Our Food Safe

All photos via Getty Images (except Heinz, via Alamy)