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A. Working to Prevent Recurring Breast Cancer

Narrator: This is Science Today. Nutrition has been long known to influence the risk of primary breast cancer. But researchers at the University of California, San Diego are now looking into how nutrition may prevent the recurrence of breast cancer. Cheryl Rock, a member of UCSD Cancer Center, is leading the Women's Healthy Eating and Living study.

Rock: One of the most important aspects of this study that's not typically done in these types of large studies is that we're actually collecting blood samples from women at the beginning and at specific intervals during the time that they're involved in the study, which is a long time - the average woman in this study will be in it for six years.

Narrator: These blood samples would contain biomarkers - such as the cancer- protective carotenoids derived from fruits and vegetables - to monitor how well a woman is following and handling a prescribed diet regimen.

Rock:And then later, when we're at the point of seeing who gets a recurrence and who doesn't, we might actually be able to identify markers that could be later measured.

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