The Colon


The China Study  by Dr. T. Colin Campbell on Fiber here or basic fiber facts including some good sources of fiber here

Dr McDougall on how Fiber Reduces Heart Attack Risk here

See study  where six obese subjects with type 2 diabetes and/or hypertension were assigned to a strict vegetarian diet (SVD) for 1 month and lowered their blood pressure and improved fasting glucose and postprandial glucose levels because the fiber changes the gut microbiota.

Review of 20 studies found those consuming the most fiber had a 28% lower likelihood of developing colon polyps & every 10 g of dietary fiber cut the polyps by 9%.

Study finds a high-fiber diet reduces death by 35% in heart attack survivors.

Colon Cancer

Dr McDougall on colon cancer here

2013 study suggests that greater red and processed meat intake before diagnosis is associated with higher risk of death among patients with nonmetastatic Colon Cancer (layman’s language here)

2001 study concluded: “overall association between meat consumption and risk of colorectal cancer appears to be positive”.  ” The finding for processed meat and data from experimental studies suggests that it may also be an important predictor of colorectal cancer risk.”

In 1975 an ecological study of 23 cancers in 27 countries found meat consumption is an important risk factor in colorectal cancer. (pdf pg 2)

Study finds the more soy consumed the lower the risk of colon cancer.

Review of 10 studies of 18,000 found strong evidence for a gene-diet interaction and colorectal cancer risk. While consumption of red meat or processed meat raised the rate of cancer by 15 and 11%, the risk with certain genes increased to 20 and 39%. It also found fruits, vegetables, and fiber consumption were associated with a decreased risk for colorectal cancer.

Researchers reviewed the 2007 report of the World Cancer Research Fund/AI for Cancer Research and found avoiding red and processed meat reduces the risk of cancers of the colon and rectum.

Study finds fruits & vegetables reduce risk for cancers of the oral cavity, oesophagus, stomach and colorectum, and diets should include at least 400 g/d of total fruits and vegetables.

Study finds preserved meat and red meat increase the risk for colorectal cancer.

Norewigan study found that a large intake of red meat increases the risk of cancer in the colon and rectum.

Review finds a high fat diet is associated with increased cancer, particularly breast and colon, and the prostate.

MD Anderson Cancer Center lists meat as a colon cancer risk factor and fruits and vegetables as a means of prevention.

Diverticular Disease

Diverticulitis or see Dr John McDougall on Diverticular Disease here

Study: vegetarian diet & a high intake of dietary fibre associated with a lower risk of hospitilization or death from diverticular disease


Elimination on a plant based diet-no constipation, frequency will increase which eliminates toxins from the body quicker Read more or read Dr McDougall on what is normal and the causes of constipation here

See the Health tab, Dangers of Dairy-lactose intolerance article for more information

Chrons’ & Colitis

Dr McDougall here or his video linking dairy to UC and chron’s

Inflammatory Bowel Disease

According to a Harvard study published in Nature, volunteers on an animal-based diet had an eight-fold increase in the gut population of a bacterium that may cause inflammatory bowel disease. Study found growth of this bacterium may be stimulated by the digestion of dairy products. The gut population of this bacterium fell three-fold in the plant-based diet group.