Sugar has long been felt to increase the chances that a person might cause cancer. Sugar can be found as table sugar and is an ingredient found in high concentrations in soda pops, cookies, and other baked goods.
One article (1) seemed to indicate that sugar intake increased the risk of getting cancer. It indicated that cancer cells thrive on sugar and that foods containing high fructose corn syrup are particularly dangerous for patients wanting to prevent or treat their cancer.
The article noted that tumors feed on sugar and grow more in the presence of sugar. PET scans have been done using radioactive sugar showed that cancer cells took up the radioactive sugar to a greater degree when compared to normal cells. The article also noted that cancers like an acidic environment and that sugar is an acidic food. This might indicate that sugar is bad for you if you are trying to prevent cancer.
Source: 1.5 Reasons why Cancer and Sugar Are Best Friends. http://beatcancer.org/2014/03/5-reasons-cancer-and-sugar-are-best-friends/. Accessed 8/18/16.
Dr. Adem Gunes