Dr. Heward explains why there were decreased breast cancer diagnoses after the Women's Health Initiative/WHI caused women to stop taking hormones.
For why we see more breast cancer in women on hormones in clinical studies, the truth is that you would expect, even out there in free living people in clinical environments, if there are lots of women in a community who are on hormones and some of them get breast cancer, those women who get breast cancer are going to have their tumor show up faster if they are on hormones, and the hormones are causing those cancers to grow faster.
So, if we now stop giving the women in the community hormones then the rate of cancer incidents for a period of time is going to be slower than it had been in the population overall when some of the population was on hormones. Som that’s the period that we're going in, and what I would predict, if the hypothesis that I am promulgating here is correct, is that we’ll see a reversal of that phenomenon as the time frame, if in fact the number of women who are avoiding hormones remains the same and the time frame for that avoidance is long enough.
About Dr. Heward, Ph.D:
Dr. Christopher B. Heward is past-President of Kronos Science Laboratory. His primary responsibility was providing scientific and technical leadership for all laboratory activities. He oversaw the development and implementation of the clinical laboratory testing program; assisted in designing and refining both internally and externally sponsored clinical studies; directed and coordinated diagnostic product research and development; administered laboratory and patient databases; was principal investigator for the Kronos Longitudinal Aging Study (KLAS); and communicated Kronos’ discoveries and advances to lay and scientific audiences via presentations and publications. Dr. Heward’s research interests included healthy aging, endocrinology, oxidative stress, Alzheimer’s disease, prion disease (TSE) and menopause. Dr. Heward attended the University of Arizona and received a Bachelor of Arts degrees from both the Department of Psychology and the Department of Chemistry, as well as a Bachelor of Science degree from the Department of Biology. He earned his PhD from the Department of Biology in 1981.
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