Aspartame and Olestra: Will We Buy the Bull? The eighties were the years of muscle building and nouvelle cuisine and we like to call it the decade of the fitness obsession. We, the people of the nineties, have gotten so discouraged with all of our Ab Trainers and Buns of Steel that we have reverted to what seems to be an easy way to stay trim: food substitutes. Sugar substitutes, such as aspartame and Acesulfame-K have been on the market for a while but the real breakthrough is in the huge amount of substitutes, mostly for fat, that have been engineered and put on the market. Last year, chemists invented Caprenin, a non-fat substitute for coc