RESISTANT STARCHES MAY PREVENT COLON CANCER.txt
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RESISTANT STARCHES MAY PREVENT COLON CANCER

Gabe Mirkin, M.D.

Three recent studies show that fiber may not prevent colon cancer in 
North Americans. Some recent studies (1) show that resistant 
starches may be the factor that prevents colon cancer in Blacks in 
South Africa and could also prevent colon cancer in Caucasians.

 
Blacks in South Africa have a very low incidence of colon cancer, 
while Caucasians in North America have a very high incidence. South 
African blacks eat a diet rich in dried maize porridge. Maize is 
corn. The porridge has an extremely high content of resistant 
starch, while fresh corn has low levels. Resistant starches cannot 
be digested in the intestines, so they cannot be absorbed and pass 
to the colon where bacteria there can break them down into short 
chain fatty acids that have been shown in many studies to help 
prevent cancers, particularly colon cancer. 

Resistant starches are found in whole grains, beans, seeds and nuts, 
and the content increases with aging. Resistant starches also cause 
the most intestinal gas.

1. R Ahmed, I Segal, H Hassan. Fermentation of dietary starch in 
humans. American Journal of Gastroenterology, 2000, Vol 95, Iss 4, 
pp 1017-1020.Address Ahmed R, Baragwanath Hosp, Div Gastroenterol, 
PO Bertsham, ZA-2013 Soweto, SOUTH AFRICA.

Checked 5/3/07