Weizmann Institute Study Finds Menopause is a Sharp Transition, Not Gradual Decline
Translated & summarized from Bizportal by baba
A Weizmann Institute study of over 300 million lab tests from a million women in Israel and the U.S. found that menopause is a sharp bodily transition, not a gradual decline. Dozens of health indicators across multiple systems changed simultaneously around the last menstrual period. These changes, which begin up to 15 years earlier hormonally, are linked to increased disease risk post-menopause. The research suggests a broader window for preventive health measures.
The story in 6 lines · by baba
- Weizmann Institute research analyzed 300 million lab tests from over 1 million women, finding menopause is a sharp bodily transition.
- Dozens of health indicators across multiple body systems changed simultaneously around the last menstrual period.
- Hormonal changes related to menopause begin up to 15 years before the last menstrual period, study found.
- The sharp changes are linked to increased risks of osteoporosis, heart attacks, and strokes post-menopause.
- The study suggests preventive health interventions could begin nearly a decade before menopause.
- Researchers adapted an astronomical method to analyze the data, overcoming challenges in pinpointing menopause timing.
A new study by the Weizmann Institute of Science, published in Nature Medicine, challenges the conventional understanding of menopause as a slow, gradual aging process. Researchers analyzed over 300 million lab test results from more than a million women in Israel and the United States. They discovered that around the time of the last menstrual period, dozens of bodily indicators change simultaneously, resembling a sharp step rather than a slow descent. Of 90 tested categories, 52 showed such a jump, affecting everything from bone density to liver and kidney function, and blood lipids.
Professor Uri Alon of the Department of Molecular Cell Biology at the Weizmann Institute, who led the research, stated that menopause is not a slow part of aging but a sharp transition affecting the entire body. The study overcame a key challenge: the exact timing of the last menstrual period is rarely recorded. By adapting a method from astronomy used to sharpen telescope images, the researchers were able to remove the "blur" caused by the variability in the timing of menopause among women, reconstructing an average trajectory of bodily changes.
Significant jumps were observed in sex hormones, as expected, but also across nearly every other system, including liver function, blood counts, blood chemistry, kidney function, bone markers, blood lipids, and salt concentration. The magnitude of these changes was highly consistent between Israel and the U.S., suggesting a biological phenomenon. Most changes indicated an increased risk for diseases, such as bone loss. An exception was iron levels, which improved, likely due to the cessation of monthly bleeding. Hormonal changes, however, begin much earlier, with key hormones like AMH and FSH showing accelerated changes up to 15 years before the last menstrual period.
The study, which included researchers from the Weizmann Institute, Clalit Health Services, Kaplan Medical Center, and Rabin Medical Center, also noted that these laboratory jumps correlate with increased disease rates post-menopause, such as osteoporosis, heart attacks, and strokes. Depression symptoms also increased in the year following menopause. The researchers suggest their findings expand the window for preventive interventions to nearly a decade before menopause.
While the study acknowledges limitations, including reliance on historical data and self-reported information, and notes that the "step" describes an average rather than an individual experience, the researchers believe their developed method could be applicable to studying other transitions like puberty or pregnancy. The next step is to determine if preventive measures initiated a decade before menopause can indeed mitigate these sharp changes.