Olestra (or Olean) lowers calorie counts while causing vitamin depletion and anal leakage.
You can find it in Fat-free potato chips, corn chips, and French fries.It was created by Procter & Gamble as a substitute for cooking oil. Olestra robs your body of its ability to absorb vitamins, and it has a fun side effects include cramps and leaky bowels. It makes your bowels loose and it is perfectly ok to put in food.
The U.K. and Canada has banned the product, but it is legal here to use. Products containing olestra placed a warning about the side effects when it first hit the market in the US, but not now.