Bernik noted that many women are interested in alternative medicine when Western medicine doesn't have the answers.
"We are always looking to learn more about how to improve the outcome of breast cancer and how to reduce the incidence of breast cancer," she said. Women are definitely interested in how they can have a healthier lifestyle."
Jennifer J. Hu, a professor of epidemiology and public health at the University of Miami School of Medicine's Sylvester Comprehensive Cancer Center, added that the problem with population-based studies is that when you try to look at one single factor you may not be taking into account other risk factors that can influence the result.
"Also, just by drinking green tea you don't get enough of the [possible cancer-fighting ingredient] to make much of a difference," she said.
Based on these problems, Hu doesn't think this study answers the question of whether or not green tea might help guard against breast cancer.
More information
For more on breast cancer, visit the American Cancer Society.
SOURCES: Motoki Iwasaki, M.D., Ph.D., Epidemiology and Prevention Division, Research Center for Cancer Prevention and Screening, National Cancer Center, Tokyo; Stephanie Bernik, M.D., breast cancer surgeon, Lenox Hill Hospital, New York City; Jennifer J. Hu, Ph.D., professor, epidemiology and public health, University of Miami School of Medicine Sylvester Comprehensive Cancer Center; Oct. 28, 2010, Breast Cancer Research, online
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