In this video, which is a reaction to friend and fellow firefighter being treated for cancer and venturing into a vegan video (and being slandered and attacked – http://tinyurl.com/yjhq5wu ), I respond to the theory that consumption of animal products (aka delicious meat, eggs, and cheese) on a ketogenic diet like Atkins leads to a higher cancer risk.
First the detractors and their comments:
“Another Harvard study showed that women with the highest intake of animal fat seem to have over a 75% greater risk of developing breast cancer. ”
As one Harvard School of Public health researcher noted, because of the meat content, two years on the Atkins Diet “could initiate a cancer. It could show up as a polyp in 7 years and as colon cancer in ten.
The most comprehensive report on diet and cancer in history was published in 1997. It took over four years to complete, reviewing 4500 studies from thousands of researchers across the globe. After all that work, what was their number one recommendation? “Choose a diet that is predominantly plant based, rich in a variety of fruits, vegetables, nuts, and beans with minimally processed starchy foods.” In other words, essentially the opposite of the Atkins Diet. (Side note: Do they even know what the Atkins Diet is? Do they understand the promoted variety of vegetables and phyto-nutrients featured?)
In the January issue of Scientific American it was noted: “Cancer is most frequent among those branches of the human race where carnivorous habits prevail.”
In response to these studies, correlation does not equal causality. What else do these carnivorous, which is just more name calling since we are more omnivorious) also eat or do? Do they eat bread with their meat? Do they talk more on their cell phone? What is their total sugar intake in relation to vegans?
Here are the mentioned studies:
Back in the 1920s, Nobel laureate Otto Warburg discovered this particular metabolism, termed aerobic glycolysis, the glycolytic phenotype, or the Warburg effect.
Perspective Medicine Chemistry 2007
The Role of Glucose Metabolism and Glucose-Associated Signalling in Cancer
However, to prevent cancer-cachexia (wasting away or loss of muscle/appetite), we propose the application of a carbohydrate-restricted nutrition, which includes significant amounts of (n-3) fatty acids as well as selected plant polyphenols. Considering the observations discussed above, this strategy could represent a novel and promising approach for a diet-based intervention against aggressive cancer.
Sugar consumption is positively associated with cancer in humans and test animals (5861). This observation is quite logical because tumours are known to be enormous sugar absorbers. It has also been found that the risk of breast cancer decreases with increases in total fat intake (16).
Long-term effects of a ketogenic diet in obese patients
Pérez-Guisado J. Carbohydrates, glucose metabolism and cancer. Endocrinology Nutrition. 2006;53:252255. http://tinyurl.com/yk37jhv
Since early 2007, Dr. Melanie Schmidt and biologist Ulrike Kämmerer, both at the Würzburg hospital, have been enrolling cancer patients in a clinical study of a most unexpected medication: fat. The good news is that the results were positive: the patients stayed alive, their physical condition stabilized or improved and their tumors slowed or stopped growing, or shrunk.
The calorically restricted ketogenic diet, an effective alternative therapy for malignant brain cancer. – Nutr Metab (Lond). 2007 February
Effects of a ketogenic diet on tumor metabolism and nutritional status in pediatric oncology patients
Journal of the American College of Nutrition, April 1995
Drug/diet synergy for managing malignant astrocytoma in mice
Nutrition And Metabolism May 2008
Lancet. 1996 May
Intake of macronutrients and risk of breast cancer.
Our findings suggest that the associations between carbohydrate intake or glycemic load and breast cancer risk among young adult women differ by body weight. With obesity, the more carbohydrates the greater the risk of cancer.
Gastro Intestinal Cancer
Growth of human gastric cancer cells in nude mice is delayed by a ketogenic diet
Nutrition and colorectal cancer risk: The role of insulin and insulin-like growth factor-1.
International Agency for Research on Cancer
Conclusions: Chronically high levels of circulating insulin and IGFs associated with a Western lifestyle may increase colorectal cancer risk