Max C. said:Unless you can provide a link that shows the menus of the test
subjects, this info is next to useless.
Probably not, PMID: 16452248 abstract states
"In colonic exfoliated cells, the percentage staining positive for the
NOC-specific DNA adduct, O(6)-carboxymethyl guanine (O(6)CMG) was
significantly (P < 0.001) higher on the high red meat diet. In 13
volunteers, levels were intermediate on the high-fiber, high red
meat diet."
This suggests that a high fiber diet provides partial, but not
total protection, and that seems plausible to me.
What kind of "red meat" was
Quoted message said:used? Most vegans think hot dogs are red meat and no different from a
grass fed steak.Do you have such a link? I looked up the study on PubMed, but could
only find the summary.
You can read this one if you register.
http://jama.ama-assn.org/cgi/content/full/293/2/172
Meat Consumption and Risk of Colorectal Cancer
Ann Chao, PhD; Michael J. Thun, MD, MS; Cari J. Connell, MPH; Marjorie
L. McCullough, ScD; Eric J. Jacobs, PhD; W. Dana Flanders, MD, ScD;
Carmen Rodriguez, MD, MPH; Rashmi Sinha, PhD; Eugenia E. Calle, PhD
JAMA. 2005;293:172-182.
Lowest risks were for the 0-30 g of red meat per day group.
They are not really sure why but they think it's the heme:
"The cytotoxic effect of dietary heme has been proposed as a potential
mechanism by which red meat increases colorectal cancer risk because of
higher heme content in red meat compared with poultry and fish.65-66
Heme damages the colonic mucosa and stimulates epithelial proliferation
in animal studies.66 Both ingestion of red meat and heme iron
supplementation have been shown to increase fecal concentrations of
N-nitroso compounds65 and DNA-adducts in human colonocytes.67-68"
--
If you like eating animals, you are probably better off with
certain types of mollusks (snails, sea scallops) and insects.