In February 2006 Professor Sheila Bingham led a study that established the link by which red meat can cause bowel cancer. For many decades researchers have believed red meat caused colon cancer but finding how it did it has been a big problem. This was the first time a proven marker of DNA damage in cells, known to cause cancer, has been found that could be directly linked to red meat.
Looking for the first sign of cancer throughout the colon and intestines has been a huge problem for researchers. In this study volunteers were placed on a vegetarian diet, a high red meat diet 420grms daily and a high red meat/ high fibre diet in a simple randomised crossover study. They were housed in a suite for the study duration, all meals were prepared for them and all samples taken and analysed.
Biopsies were taken from the colon walls and the cancer link was proven, people eating a high red meat diet were found to have significantly more damaged DNA cells than the vegetarian diet. The high red meat and high fibre diet were intermediate risk.
http://cancerres.aacrjournals.org/cgi/cont...rnalcode=canres
This study followed hard on the heels of a large European study of 478040 men/women aged 25 to 70 from ten European countries also led by Bingham in 2005. In this study processed meat was also included, processed meat has also been a suspect in the cancer causing stakes for a long time. The same results were achieved here as well.
http://www.colorectal-cancer.ca/en/news-an...vidence-cancer/
People who ate two servings or 160grms of red meat per day and/ or processed meat were 35% more likely to develop bowel or colon cancer than those that only ate 20 grms.
Chicken had no effect and fish reduced the risk.
I wrote this out of respect to Professor Sheila Bingham (she married Rodwell later) who died from Melanoma 17/7/09, she did some great work.
http://www.aicr.org/site/News2?page=NewsAr...ws_iv_ctrl=2302
Cheers