Refined sugars
Like refined flours, the rapid spike in insulin levels aids in cancer cell growth, which explains why cancer rates are on the rise these days. Fructose-rich sweeteners like high-fructose corn syrup (HFCS) are one such example. Cookies, cakes, pies, sodas, juices, sauces, cereals and other processed food products are laden with HFCS and other refined sugars.