Carbohydrates of one of the three macronutrients—the other two being fats and protein. There are simple carbohydrates and complex carbohydrates. Simple carbohydrates include sugars found naturally in foods such a fruits and fruit juices, sodas, some vegetables, white bread, white rice, pasta, milk and milk products, most snack foods, sweets, etc. But let us not forget the simple sugars added to foods during processing and refining that we may have no awareness of. It’s the simple sugars that get most of the credit for causing the insulin response and thus inflammation that can lead to cancer. Thus by reducing the amount of simple carbohydrates in the diet, the emergence of cancer can be suppressed or delayed, or the proliferation of already existing tumor cells can be slowed down, stopped and reversed by depriving the cancer cells of the food they need for survival.
Drs. Rainer Klement and Ulrike Kammerer conducted a comprehensive review of the literature involving dietary carbohydrates and their direct and indirect effect on cancer cells, which was published in October 2011 in the journal Nutrition and Metabolism, concluding that cancers are so sensitive to the sugar supply that cutting that supply will suppress cancer. “Increased glucose flux and metabolism promotes several hallmarks of cancer such as excessive proliferation, anti-apoptotic signaling, cell cycle progression and angiogenesis.”
Eating white sugar (or white anything) causes magnesium mineral deficiencies because the magnesium has been removed in the processing, making sugar a ripe target as a major cause of cancer because deficiencies in magnesium are not only pro-inflammatory but also pro-cancer.
 Is there a role for carbohydrate restriction in the treatment and prevention of cancer? Rainer J Klement and Ulrike Kämmerer; Nutr Metab (Lond). 2011; 8: 75; Published online 2011 October 26. doi: 10.1186/1743-7075-8-75 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3267662/?tool=pubmed