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Dr. David Zava's ProfileDAVID ZAVA, Ph.D. is a Biochemist, Research Scientist and internationally known speaker on the subject of hormone imbalances, natural hormone replacement, saliva hormone testing and breast cancer. After receiving his Ph.D. in Biochemistry from the University of Tennessee, Memphis, in 1974, he pursued his interests in cancer research. Working in the U.S. and Switzerland he focused on hormonal control of breast cancer. Over the past 25 years, he has published extensively on basic and clinical research relating to the effects of estrogens (natural and plant estrogens and pollutant xenoestrogens) and progesterone on breast cancer. Dr. Zava developed saliva testing as a simple non-invasive means to test hormones and as a means to evaluate hormonal risk factors for breast cancer. Because steroid hormones play such a vital role in maintenance of health, knowledge of an imbalance in any one or more hormones can help to illuminate the cause of health problems and provide a basis for correcting the imbalance through diet, exercise or hormone supplementation. He is the Founder and Laboratory Director of ZRT Laboratory (CLIA certified) located in Beaverton, Oregon, using saliva for testing hormonal levels since 1998. His goal is to develop research projects with physicians and academic groups to understand the role of steroid hormones in health and disease, particularly breast cancer. ZRT Laboratory currently has several ongoing research projects. Dr. Zava has co-authored 60 Scientific Publications and is co-author with John Lee, M.D. of What Your Doctor May Not Tell You About Breast Cancer: How Hormone Balance May Save Your Life published in January 2002. If you would like to reach Dr. Zava you can contact him by email: dzava@zrtlab.com
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