By Catey Hill, SmartMoney.com
1. This is illegal in Canada
An hour after munching on some light potato chips -- made with fat substitute olestra -- Debra Jaliman, 55, a Manhattan dermatologist, found herself so sick with abdominal cramps that she had to cancel her slate of patients. Reactions like these are why the Center for Science in the Public Interest, a consumer advocacy organization, says no one should eat olestra, and why Canada and the United Kingdom banned it. But it's legal here -- and you'll find it in foods like low- or non-fat chips, crackers and cookies. Procter & Gamble, which sells olestra under the name Olean, says that nearly 6.5 million servings of foods containing Olean have been consumed since 1996, the year the FDA approved olestra for U.S. use.