Next on the list of edible evils, after partially hydrogenated oils, comes high fructose corn syrup. Our bodies process fructose differently from sucrose (table sugar) and although there’s no agreement on whether it is the high fructose corn syrup itself to blame or just our overconsumption of it, obesity rates began to climb right after its mass introduction. Interestingly, fructose does not appear to activate the hormones that turn off our appetites. And a few studies have shown that fructose consumption increases the level of circulating fats in the bloodstream. It can be difficult to avoid high fructose corn syrup; it’s in most sodas, “fruit” drinks, even yogurts and breads. As a general rule, eating fewer processed foods is the safe bet to make.