English scientists have learned that rich in animal protein foods common to the inhabitants of the USA, increases the risk of cancer of the intestinal tract. At the same time, plant foods Africans reduces the likelihood of developing cancer. Experts from Imperial College London studied the degree of influence of nutrition on the risk of developing bowel cancer, writes The Independent. During the experiment the scientists found that the food of the rural inhabitants of southern Africa significantly reduces the possibility of developing this cancer. The researchers conducted an experiment involving 20 of the inhabitants of Pittsburgh (Pennsylvania) and 20 inhabitants in the province of KwaZulu-Natal in South Africa. In the process of scientific work they have proposed to share their everyday diet. Thus, the Americans for 2 weeks ate traditional food of the rural inhabitants of South Africa. Their food is rich in fiber, contains no fat, and it is based on corn, vegetables, fruits and legumes. Accordingly, 20 residents of KwaZulu-Natal 14 days fed on a normal "Western" food with huge amounts of red meat and lack of fruits and vegetables. They ate sausages from beef, burgers and fries. Before and after the experiment, all subjects underwent a special examination of the colon colonoscopy. Specialists primarily found experience inflammation and polyps - abnormal growths on the mucous membrane of the intestinal tract, which are considered indicators of risk of developing cancer. In the beginning of the study polyps were found in almost half of Americans, and South Africans they were not. At the end of the experiment, the survey of inhabitants of the USA showed a significant reduction of the inflammatory process in the colon. At the same time, the residents of KwaZulu-Natal the risk of developing bowel cancer has risen sharply. "Mind-blowing how quickly and dramatically changed the number of cancer markers in both groups of subjects following the diet," said managing research Dr. Jeremy Nicholson. He also expressed concern that the progress of African communities and bringing them to Western food can lead to a sharp increase in the number of oncological diseases of the colon.