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A. Certain Ethnic Groups Benefit from Earlier Screening for Colorectal Cancer

Narrator: This is Science Today. Currently, early detection screenings for colorectal cancer are recommended for everyone at age fifty and above. But a new study has found for certain racial and ethnic groups, the recommended age should be lower. Dr. Charles Theuer of the University of California, Irvine, led the study.

Theuer: We looked at race in terms of black, Asian, white and Latino and we found that blacks are at highest risk of colorectal cancer and for that reason, they benefit most from a screening program that starts even before age fifty.

Narrator: In their study - the first of its kind to look into the cost-effectiveness of screenings in certain groups, the age that proved most effective for African-Americans was forty-two.

Theuer: Regardless of race, everyone needs to be screened starting at age fifty. And that's really an important point because a recent study showed that less than ten percent of our population is being screened in accordance with current American Cancer Society guidelines.

Narrator: For Science Today, I'm Larissa Branin.