|MadSci Network: Biochemistry|
You seem to have a strong reaction to a relatively small dose of indigestible fat! Olestra is no worse than a mineral oil laxative (1 Tbspn ~ 13 g). Although in "normal" individuals with adequate meal balance and good liver/gallbladder function fats are digested quite easily, it is not uncommon for people to have great difficulty with excess fats in the diet. There are several possible reasons: 1. Liver disease or dysfunction (inadequate bile enzymes). 2. Gallbladder disease (which should be investigated in your case). 3. Genetic susceptibility. Undigested food fats become "Olestra-like" in their laxative function. When using oil for frying, it's important the oil be fresh and usually of a high flash point. Oils that are suitable are viscous at room temperature. Canola oil is very "thin" and has a low flash point. This kind of oil breaks down chemically fairly easily under heat. It then continues to break down auto-catalytically thereafter. This process is called "oxidative rancidity". Franchise chains use antioxidant additives (e.g., BHA/BHT), high- temperature fats (cottonseed oil, lard, tallow), close temperature control, and controlled recycling. Although it's possible you have some type of chemical reaction to rancidity byproducts, it's much more likely your body has problems digesting excessive quantities of fats in any one meal. Make sure you don't have gallbladder or liver disease and avoid excessive intake of fats and fiber in meals.
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