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Eric Topol
Ground Truths
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  • Jennifer Gunter & Eric Topol: Discuss Women’s Health and Recent Changes by FDA for MHT
    A couple of weeks ago, the FDA Commissioner published a WSJ oped “The FDA Liberates Women’s Hormone Replacement Therapy” (←gift link) and, with other FDA colleagues, a JAMA essay entitled “Updated Labeling for Menopausal Hormone Therapy” (open-access). That change, and the data cited, led to a series of articles in the days that followed, such as at STAT News “FDA reverses decades-old warning on hormone therapy products for menopause. Agency says the treatments o!fer heart, brain, and bone health benefits” and at the Washington Post “The FDA finally corrects its error on menopause hormone therapy. Women have been needlessly scared away from effective treatments.” If you read through these links, you’ll be confused. Does MHT have proven cognitive benefits? What about a study from 1991 that showed ~50% reduction of fatal heart events with MHT? Or the 35% decreased risk of Alzheimer’s disease? Or the breast cancer increased risk attributed to medroxyprogesterone acetate?I turned to my go-to gynecologist truth teller, Dr. Jen Gunter, to get her review of the evidence. This is a complex topic, with old data from the 2002 Women’s Heath Initiative (WHI), new reports since, population level analysis, changes in preparations of MHT including local delivery, and much more.Here is our conversation which isn’t just about MHT but includes “Big Wellness” marketing direct to middle aged women, the new FDA approved drug for hot flashes, the $14 million cut of the NIH’s Office of Women’s Health , marked increase in philanthropic support of women’s health research, the Surgeon General nominee, ovarian failure, and a lightning round on proven benefits of MHT.Here’s a brief clip on her views of the women’s health “wellness” predatorsWe also discussed the reasons for Dr. Gunter’s planned move next year back to Canada after practicing gynecology for 3 decades in the United States. I referred to a recent GT I wrote about the WHI and the potential favorable impact of MHT on the immune system, as suggested by new data on organ clocks. That finding, which has been replicated, may be linked to healthy aging, extending healthspan.****************************Thanks to the >190,000 Ground Truths subscribers from every US state and 210 countries. Your subscription to these free essays and podcasts makes my work in putting them together worthwhile.If you found this interesting PLEASE share it!Paid subscriptions are voluntary and all proceeds from them go to support Scripps Research. They do allow for posting comments and questions, which I do my best to respond to. Please don’t hesitate to post comments and give me feedback. Let me know topics that you would like to see covered.Many thanks to those who have contributed—they have greatly helped fund our summer internship programs for the past two years. It enabled us to accept and support 47 summer interns in 2025! We aim to accept even more of the several thousand who will apply for summer 2026.Thank you Debbie Weil, Cynthia Brumfield, Sara Garcia, Harshi Peiris, Ph.D., Liane Moccia, and over 1,000 others for tuning into my live video with Dr. Jen Gunter! Join me for my next live video in the app. Get full access to Ground Truths at erictopol.substack.com/subscribe
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  • Dr. Susan Monarez—Former CDC Director, First Live Interview
    Dr. Susan Monarez was the first CDC Director to be confirmed by the Senate and served from July 31, 2025 – August 27, 2025. Because she refused to give approval to new vaccine recommendations without ever seeing them or their evidence and firing scientists without cause, she was fired. In my view, she’s a hero for standing up for science and speaking truth to power.In her first live interview since leaving the CDC, we review her background. That includes growing up in rural Wisconsin and getting her college and PhD education at UW-Madison, the latter in microbiology and immunology. She then went on to 18 years of government service with an extensive portfolio of jobs and management at BARDA, the White House, ARPA-H, and others, before becoming Acting Director of the CDC in early 2025.We discussed the horrific CDC shooting on August 8th, days after she started. Then we reviewed a conversation that we had on August 19th in which she laid out her exciting vision for the future of CDC, emphasizing the goal of prevention (BTW, CDC stands for Centers for Disease Control and Prevention) and asked me to help as an advisor. At the time, she was well aware, with growing tension, that her tenure at CDC might be limited. I asked about her perspective for the jobs of 4,300 people at CDC who have been terminated, which account for more than 1/3rd of the workforce, no less the gutting of the budget.Then we got into what she learned from this ordeal and her plans for the future, which includes a very ambitious initiative: 90/90/2035. As you’ll see from our conversation, Dr. Monarez is exceptionally resilient and an optimist. She’s got lots to do in the years ahead to carry out her mission of promoting human health!Dr. Monarez just started a Substack The Road Best Traveled so you can follow her there. It was a real privilege for me to do this interview with her. In deep admiration of her willingness to not only take on the job of CDC Director in tough circumstances, her professionalism during testimony at the Senate committee hearing, her impressive yet unrealized vision for transforming the CDC, and refusing to cave to immense pressure from the HHS Secretary to move ahead with his agenda. Thank you Julie, Stephen B. Thomas, PhD, David Dansereau, MSPT, Dr. Sara Wolfson, Vau Geha, and >500 others for tuning into my live video with The Road Best Traveled! Thanks for being a Ground Truths subscriber! Please spread the word. Get full access to Ground Truths at erictopol.substack.com/subscribe
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  • Seth Berkley & Eric Topol - Discuss Fair Doses Book
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  • Tom Frieden & Eric Topol - Discuss the Formula for Better Health Book
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  • Shana Kelley: Biosensors to Track Proteins and Inflammation in Our Blood in Real Time
    Prof Shana Kelley is the Neena Schwartz Professor of Chemistry and Biomedical Engineering at Northwestern University and President of the CZI Chicago Biohub, which brings together life scientists at Northwestern, University of Chicago, and U. Illinois Urbana Champaign. Her lab’s website provides recent publications in the 3 major areas of biomolecular sensors, rare and single cell analysis, and intracellular molecular delivery.You are undoubtedly familiar with wearable biosensors on the wrist and rings, and continuous glucose monitoring (CGM), all of which can transmit physiologic data in real time to your smartphone. What is different about Prof Kelley’s work is the ingenious way of continuously tracking any proteins in our blood via a sensor that could function just like CGM in the future (hair thin sensor applied just below the skin and data relayed to your smartphone). A proof-of-concept paper in Science showed how exquisitely sensitive such a sensor worked to track inflammation markers [interleukin-6 (IL-6) and tumor necrosis factor (TNF)] in the diabetic rat model. As seen. below, just the injection of insulin evoked inflammation, and introduction of lipopolysaccharide (LPS) did so markedly.This capability opens up the potential for monitoring body-wide inflammation in real time, but also extends to many other conditions such as autoimmune diseases, heart failure (e.g. continuous brain natriuetic peptide monitoring), and neurodegenerative diseases (with specific markers of neuroinflammation). This innovation represents a new dimension in individualized (precision) medicine.In our conversation, Shana takes us through the discovery of these unique bimolecular sensors that have no reagents, and use electricity to shake off the protein from DNA strands. And she maps out the path to clinical trials and commercialization in the next couple of years.Thank you Stephen B. Thomas, PhD, Linda Kemp, Lynn L, Pat Mumby PhD, David Hobson, and many others for tuning into my live video with Shana Kelley! Join me for my next live video in the app, along with posts on biomedical news and analysis.***********************************************************************Thanks you for your listening, reading and subscribing to Ground Truths.If you found this interesting PLEASE share it!That makes the work involved in putting these together especially worthwhile.All content on Ground Truths—its newsletters, analyses, and podcasts, are free, open-access.Paid subscriptions are voluntary and all proceeds from them go to support Scripps Research. They do allow for posting comments and questions, which I do my best to respond to. Please don't hesitate to post comments and give me feedback. Let me know topics that you would like to see covered.Many thanks to those who have contributed—they have greatly helped fund our summer internship programs for the past two years. It enabled us to accept and support 47 summer interns in 2025! Get full access to Ground Truths at erictopol.substack.com/subscribe
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