Heart disease and cancer was virtually unknown among the Intuit people when they consumed a pure animal products diet because they had adapted to it over the years. When a western diet was introduced to them, they started developing all sorts of cancers.
"Inuit people inhabit the circumpolar region, with most living in Alaska, northwest Canada, and Greenland. Although malignant diseases were believed to be almost non-existent in Inuit populations during the beginning of the 20th century, the increasing life expectancy within these populations showed a distinct pattern, characterized by a high risk of Epstein-Barr virus-associated carcinomas of the nasopharynx and salivary glands, and a low risk of tumors common in white populations, including cancer of the prostate, testis, and haemopoietic system. Both genetic and environmental factors seem to be responsible for this pattern. During the second half of the 20th century, Inuit societies underwent major changes in lifestyle and living conditions, and the risk of lifestyle-associated tumors, especially cancers of the lung, colon, and breast, increased considerably after changes in smoking, diet, and reproductive factors."
Regarding milk and meat diets, milk and meat generally don' t make it to the colon, they are fully absorbed by the body. What hits your colon is what your body does not absorb.
To date some studies have shown a correlating relationship between red and processed meat and colon cancer.
However, no causal relationship has been established.
Theories range from lifestyle differences of people that tend to eat a lot of red and processed meat, to cooking meat at high temperatures, to nitrates in processed meats, and theories like this one...
“A possible link could be that if you have high red meat consumption, you get this alkylating damage, and this alkylating damage [causes mutations in] the KRAS genes. And we know that KRAS mutations promote cancer growth,” Dr. Giannakis said. “It doesn’t mean that if you have this damage, you will certainly get colorectal cancer.
I have not seen evidence that these studies attempted to screen patients based on their ancestry to determine if their bodies respond differently based on that ancestry.
CoPilot AI sums it up pretty well...
There isn't definitive evidence that keto consumers have higher rates of cancer than the general population. Some studies suggest that the keto diet might have potential benefits for certain cancer treatments, such as enhancing the effectiveness of CAR T-cell therapy2. However, other research indicates that the high-fat, low-carbohydrate nature of the diet could pose risks, such as promoting cachexia (a wasting syndrome) in cancer patients.
We have barely scratched the surface in understanding how various foods impact human cancer rates based on individual genetic differences. The one thing that has been emerging as universally true is that low carb diets whether meat based or vegan based produce far better outcomes than diets with too many carbs especially processed carbs due to the impact of carbs on blood sugar.
As for our digestive system design, it is designed for protein and fats. Animals whose digestive tracts are designed for raw plants and grains have longer digestive tracts, humans because we use heat to breakdown plants before consuming them and consume a lot of meat protein and fats need to spend much less time "eating" because we get plenty of energy from fat.
Some evolutionists argue that brain size is highly correlated to the use of the brain to hunt... and the fact that we had time to think before we got our energy concentrated in the form of fat rather than other animals that spend most of the day eating to get enough energy to maintain their body weight.
The major problem today seems to be we have gotten too good at securing food and so we don't burn enough of it off trying to catch it.
