In one study, 33 participants with normal chances of developing
colon cancer, and no family cancer history, took 2,000 mg of
ginger root extract per day or a placebo for 28 days. Doctors
said that the dose was equal to 7/10ths of an ounce of raw
ginger, a safe and reasonable dietary amount. Before and after
the study, researchers analyzed colon tissue for signs of
inflammation. While there was no change for the placebo group,
the ginger group had 28 percent lower levels of an enzyme the
body releases in response to inflammation, including the type of
inflammation that occurs in the early stages of colorectal
cancer. Doctors are calling for more study to determine how much
this inflammatory enzyme needsto decrease to prevent colon
cancer.