unPAUSED with Dr. Mary Claire Haver

Why Women Gain Weight on the Same Diet as Men: Fueling, Fasting, and Biology with Dr. Stacy Sims

1 h 4 min · 14. juli 2026
episode Why Women Gain Weight on the Same Diet as Men: Fueling, Fasting, and Biology with Dr. Stacy Sims cover

Beskrivelse

In this episode of unPAUSED, Dr. Mary Claire Haver sits down with exercise physiologist and nutrition scientist Dr. Stacy Sims to unpack why so much fitness and diet advice built on male physiology leaves women confused about why the scale will not move, and why weight loss can feel so much harder for women than for men on the exact same plan. Dr. Sims, author of Roar and Next Level, a former professional cyclist who has taught and coached at Stanford, breaks down why women following the same diet and training program as their male partners often end up tired and stuck rather than leaner and fitter. The conversation covers the biological reasons women conserve fat in a calorie deficit, how female circadian rhythm differs from male circadian rhythm, and why eating within an hour of waking helps regulate cortisol and appetite hormones like ghrelin and peptide YY. Dr. Sims explains why fasted workouts can backfire for women, why front loading calories earlier in the day supports better metabolic outcomes, and why time restricted eating works with a woman's biology in ways that intermittent fasting often does not. Guest links: Dr. Stacy Sims [https://www.drstacysims.com/] Dr. Stacy Sims [https://www.facebook.com/drstacysims/] (Facebook) Dr. Stacy Sims [https://www.youtube.com/channel/UCPD55VPa1ZWx1a_nzWC2VJA] (YouTube) Dr. Stacy Sims [https://www.instagram.com/drstacysims/?hl=en] (Instagram) Stacy T. Sims, PhD [https://www.linkedin.com/in/stacy-t-sims-phd/] (LinkedIn) Dr. Stacy Sims Newsletter [https://www.drstacysims.com/generic_optin?utm_source=linktree&utm_medium=social&utm_campaign=] Dr. Stacy Sims Microlearning Course [https://www.drstacysims.com/microlearning] Books “The New Perimenopause,” [https://thepauselife.com/pages/the-new-perimenopause-book?srsltid=AfmBOoqkbc2_wmfEQSfuf1fMT3s-ImuwNhUak8wC4KsEiYhHyNtQgSy5] by Dr. Mary Claire Haver “The New Menopause"⁠ [https://www.amazon.com/New-Menopause-Navigating-Through-Hormonal/dp/B0CKBZ4K1Z/ref=sr_1_3?crid=10GNBSGVPDFJZ&dib=eyJ2IjoiMSJ9.djG88jtefTqLpTg36Li8QIefDxRPHA-WKVyCC9DQ7X71Ad734j96bPWX-yewnsv9Pqm7WCali5P5-h2eixUH_yHkbz1DHy2rQFoQSh7O92HNwttIL_ZBgXVor81D-Z3sbsfBh7JOJXDQwUuhWNnA5LHbsuI1CyhIyjtRm6_DXYJFaWrkYTjJeqJyFBnBZfgTprhlgJe_RZoWH9pOY6S9XzRapnMjnZgOq7PBA7Wy2KM.ZfI9WXwN58225D-i3qDhw4ZlXZO4pt8rPX1nAKiBNHM&dib_tag=se&keywords=perimenopause+book+mary+claire&qid=1775810714&sprefix=perimenopause+book+mary+claire%2Caps%2C511&sr=8-3] by Dr. Mary Claire Haver “Next Level: Your Guide to Kicking Ass, Feeling Great, and Crushing Goals Through Menopause and Beyond,” [https://www.amazon.com/Next-Level-Kicking-Crushing-Menopause/dp/0593233158] by Dr. Stacy Sims “ROAR: How to Match Your Food and Fitness to Your Unique Female Physiology for Optimum Performance, Great Health, and a Strong, Lean Body for Life,” [https://www.amazon.com/ROAR-Fitness-Physiology-Optimum-Performance/dp/1623366860] by Dr. Stacy Sims

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Alle episoder

51 Episoder

episode Lift Heavy, Protect Your Brain: Strength, Creatine, and Sauna for Women with Dr. Stacy Sims cover

Lift Heavy, Protect Your Brain: Strength, Creatine, and Sauna for Women with Dr. Stacy Sims

In this episode of unPAUSED, Dr. Mary Claire Haver continues her conversation with exercise physiologist and nutrition scientist Dr. Stacy Sims, moving from what does not work to what actually does for women in perimenopause and menopause. They cover why strength training, not endless cardio, is one of the most powerful tools women have for protecting muscle, bone, and brain health at midlife, and Dr. Sims walks through exactly how to structure a 20 minute strength session for maximum benefit. The conversation turns to creatine, including why women between 18 and 65 see some of the strongest benefits for brain and heart health, proper dosing, and why timing and mixing matter for bioavailability. Dr. Sims and Dr. Haver also discuss why distance runners can still develop osteoporosis despite years of training, and how chronic under fueling and calcium loss play a role. Guest links: Dr. Stacy Sims [https://www.drstacysims.com/] Dr. Stacy Sims [https://www.facebook.com/drstacysims/] (Facebook) Dr. Stacy Sims [https://www.youtube.com/channel/UCPD55VPa1ZWx1a_nzWC2VJA] (YouTube) Dr. Stacy Sims [https://www.instagram.com/drstacysims/?hl=en] (Instagram) Stacy T. Sims, PhD [https://www.linkedin.com/in/stacy-t-sims-phd/] (LinkedIn) Dr. Stacy Sims Newsletter [https://www.drstacysims.com/generic_optin?utm_source=linktree&utm_medium=social&utm_campaign=] Dr. Stacy Sims Microlearning Course [https://www.drstacysims.com/microlearning] Books “The New Perimenopause,” [https://thepauselife.com/pages/the-new-perimenopause-book?srsltid=AfmBOoqkbc2_wmfEQSfuf1fMT3s-ImuwNhUak8wC4KsEiYhHyNtQgSy5] by Dr. Mary Claire Haver “The New Menopause"⁠ [https://www.amazon.com/New-Menopause-Navigating-Through-Hormonal/dp/B0CKBZ4K1Z/ref=sr_1_3?crid=10GNBSGVPDFJZ&dib=eyJ2IjoiMSJ9.djG88jtefTqLpTg36Li8QIefDxRPHA-WKVyCC9DQ7X71Ad734j96bPWX-yewnsv9Pqm7WCali5P5-h2eixUH_yHkbz1DHy2rQFoQSh7O92HNwttIL_ZBgXVor81D-Z3sbsfBh7JOJXDQwUuhWNnA5LHbsuI1CyhIyjtRm6_DXYJFaWrkYTjJeqJyFBnBZfgTprhlgJe_RZoWH9pOY6S9XzRapnMjnZgOq7PBA7Wy2KM.ZfI9WXwN58225D-i3qDhw4ZlXZO4pt8rPX1nAKiBNHM&dib_tag=se&keywords=perimenopause+book+mary+claire&qid=1775810714&sprefix=perimenopause+book+mary+claire%2Caps%2C511&sr=8-3] by Dr. Mary Claire Haver “Next Level: Your Guide to Kicking Ass, Feeling Great, and Crushing Goals Through Menopause and Beyond,” [https://www.amazon.com/Next-Level-Kicking-Crushing-Menopause/dp/0593233158] by Dr. Stacy Sims “ROAR: How to Match Your Food and Fitness to Your Unique Female Physiology for Optimum Performance, Great Health, and a Strong, Lean Body for Life,” [https://www.amazon.com/ROAR-Fitness-Physiology-Optimum-Performance/dp/1623366860] by Dr. Stacy Sims

17. juli 202642 min
episode Why Women Gain Weight on the Same Diet as Men: Fueling, Fasting, and Biology with Dr. Stacy Sims cover

Why Women Gain Weight on the Same Diet as Men: Fueling, Fasting, and Biology with Dr. Stacy Sims

In this episode of unPAUSED, Dr. Mary Claire Haver sits down with exercise physiologist and nutrition scientist Dr. Stacy Sims to unpack why so much fitness and diet advice built on male physiology leaves women confused about why the scale will not move, and why weight loss can feel so much harder for women than for men on the exact same plan. Dr. Sims, author of Roar and Next Level, a former professional cyclist who has taught and coached at Stanford, breaks down why women following the same diet and training program as their male partners often end up tired and stuck rather than leaner and fitter. The conversation covers the biological reasons women conserve fat in a calorie deficit, how female circadian rhythm differs from male circadian rhythm, and why eating within an hour of waking helps regulate cortisol and appetite hormones like ghrelin and peptide YY. Dr. Sims explains why fasted workouts can backfire for women, why front loading calories earlier in the day supports better metabolic outcomes, and why time restricted eating works with a woman's biology in ways that intermittent fasting often does not. Guest links: Dr. Stacy Sims [https://www.drstacysims.com/] Dr. Stacy Sims [https://www.facebook.com/drstacysims/] (Facebook) Dr. Stacy Sims [https://www.youtube.com/channel/UCPD55VPa1ZWx1a_nzWC2VJA] (YouTube) Dr. Stacy Sims [https://www.instagram.com/drstacysims/?hl=en] (Instagram) Stacy T. Sims, PhD [https://www.linkedin.com/in/stacy-t-sims-phd/] (LinkedIn) Dr. Stacy Sims Newsletter [https://www.drstacysims.com/generic_optin?utm_source=linktree&utm_medium=social&utm_campaign=] Dr. Stacy Sims Microlearning Course [https://www.drstacysims.com/microlearning] Books “The New Perimenopause,” [https://thepauselife.com/pages/the-new-perimenopause-book?srsltid=AfmBOoqkbc2_wmfEQSfuf1fMT3s-ImuwNhUak8wC4KsEiYhHyNtQgSy5] by Dr. Mary Claire Haver “The New Menopause"⁠ [https://www.amazon.com/New-Menopause-Navigating-Through-Hormonal/dp/B0CKBZ4K1Z/ref=sr_1_3?crid=10GNBSGVPDFJZ&dib=eyJ2IjoiMSJ9.djG88jtefTqLpTg36Li8QIefDxRPHA-WKVyCC9DQ7X71Ad734j96bPWX-yewnsv9Pqm7WCali5P5-h2eixUH_yHkbz1DHy2rQFoQSh7O92HNwttIL_ZBgXVor81D-Z3sbsfBh7JOJXDQwUuhWNnA5LHbsuI1CyhIyjtRm6_DXYJFaWrkYTjJeqJyFBnBZfgTprhlgJe_RZoWH9pOY6S9XzRapnMjnZgOq7PBA7Wy2KM.ZfI9WXwN58225D-i3qDhw4ZlXZO4pt8rPX1nAKiBNHM&dib_tag=se&keywords=perimenopause+book+mary+claire&qid=1775810714&sprefix=perimenopause+book+mary+claire%2Caps%2C511&sr=8-3] by Dr. Mary Claire Haver “Next Level: Your Guide to Kicking Ass, Feeling Great, and Crushing Goals Through Menopause and Beyond,” [https://www.amazon.com/Next-Level-Kicking-Crushing-Menopause/dp/0593233158] by Dr. Stacy Sims “ROAR: How to Match Your Food and Fitness to Your Unique Female Physiology for Optimum Performance, Great Health, and a Strong, Lean Body for Life,” [https://www.amazon.com/ROAR-Fitness-Physiology-Optimum-Performance/dp/1623366860] by Dr. Stacy Sims

14. juli 20261 h 4 min
episode Vanishing Vulvas & Menopause: What's Really Happening with Dr. Karen Tang cover

Vanishing Vulvas & Menopause: What's Really Happening with Dr. Karen Tang

Guest links Karen Tang, MD [https://www.instagram.com/karentangmd/] (Instagram) Karen Tang, MD [https://www.facebook.com/karentangmd/] (Facebook) Karen Tang, MD [https://www.youtube.com/c/karentangmd] (YouTube) Karen Tang, MD [https://www.linkedin.com/in/karen-tang-md-mph-412b0995] (LinkedIn) Karen Tang, MD [https://www.tiktok.com/@karentangmd] (TikTok) GynoMight with Karen Tang, MD [https://karentangmd.substack.com/?utm_source=ig&utm_medium=social&utm_content=link_in_bio&fbclid=PAZXh0bgNhZW0CMTEAc3J0YwZhcHBfaWQMMjU2MjgxMDQwNTU4AAGnmQbf91crO8-OomNRWLIuzF6PE3U57lQ56vPpl1yl-QGv7xtq1F-CokK-R2U_aem_Y2dRIhFbRxfsXdrqJLi8Qw&utm_id=97760_v0_s00_e0_tv3_a1dennhaawmhw6] (Substack) Thrive Gynecology [https://thrivegyn.com/about-us/] Books “It's Not Hysteria: Everything You Need to Know About Your Reproductive Health (but Were Never Told) [https://www.amazon.com/Its-Not-Hysteria-Everything-Reproductive/dp/1250894158],” by Dr. Karen Tang “The New Perimenopause: An Evidence-Based Guide to Surviving the Zone of Chaos and Feeling Like Yourself Again [https://www.amazon.com/New-Perimenopause-Evidence-Based-Surviving-Yourself/dp/0593736613],” by Dr. Mary Claire Haver “The New Menopause"⁠ [https://www.amazon.com/New-Menopause-Navigating-Through-Hormonal/dp/B0CKBZ4K1Z/ref=sr_1_3?crid=10GNBSGVPDFJZ&dib=eyJ2IjoiMSJ9.djG88jtefTqLpTg36Li8QIefDxRPHA-WKVyCC9DQ7X71Ad734j96bPWX-yewnsv9Pqm7WCali5P5-h2eixUH_yHkbz1DHy2rQFoQSh7O92HNwttIL_ZBgXVor81D-Z3sbsfBh7JOJXDQwUuhWNnA5LHbsuI1CyhIyjtRm6_DXYJFaWrkYTjJeqJyFBnBZfgTprhlgJe_RZoWH9pOY6S9XzRapnMjnZgOq7PBA7Wy2KM.ZfI9WXwN58225D-i3qDhw4ZlXZO4pt8rPX1nAKiBNHM&dib_tag=se&keywords=perimenopause+book+mary+claire&qid=1775810714&sprefix=perimenopause+book+mary+claire%2Caps%2C511&sr=8-3] by Dr. Mary Claire Haver For a list of full show notes, please click here [https://thepauselife.com/blogs/the-unpaused-podcast/vanishing-vulvas-menopause-whats-really-happening-with-dr-karen-tang].

10. juli 202634 min
episode Endometriosis and Fibroids Don't Stop at Menopause with Dr. Karen Tang cover

Endometriosis and Fibroids Don't Stop at Menopause with Dr. Karen Tang

In this episode of unPAUSED, Dr. Mary Claire Haver sits down with Dr. Karen Tang, a board certified gynecologist and minimally invasive gynecologic surgeon, and author of It's Not Hysteria: Everything You Need to Know About Your Reproductive Health But Were Never Told. This is part one of a two part conversation. Together they take on a question that most women entering perimenopause have never been given the tools to answer: what happens to the gynecologic conditions you have been managing for years when your hormones start to shift? Dr. Tang opens with endometriosis, dismantling two of the most persistent myths in gynecology: that it goes away after menopause, and that it is cured by pregnancy or hysterectomy. She explains what endometriosis actually is, why it so often goes undiagnosed for an average of seven years, why imaging studies frequently miss it, and what the full range of treatment options looks like for perimenopausal women dealing with painful periods, pelvic pain, and chronic inflammation, including when surgery is the right next step. Guest links Karen Tang, MD [https://www.instagram.com/karentangmd/] (Instagram) Karen Tang, MD [https://www.facebook.com/karentangmd/] (Facebook) Karen Tang, MD [https://www.youtube.com/c/karentangmd] (YouTube) Karen Tang, MD [https://www.linkedin.com/in/karen-tang-md-mph-412b0995] (LinkedIn) Karen Tang, MD [https://www.tiktok.com/@karentangmd] (TikTok) GynoMight with Karen Tang, MD [https://karentangmd.substack.com/?utm_source=ig&utm_medium=social&utm_content=link_in_bio&fbclid=PAZXh0bgNhZW0CMTEAc3J0YwZhcHBfaWQMMjU2MjgxMDQwNTU4AAGnmQbf91crO8-OomNRWLIuzF6PE3U57lQ56vPpl1yl-QGv7xtq1F-CokK-R2U_aem_Y2dRIhFbRxfsXdrqJLi8Qw&utm_id=97760_v0_s00_e0_tv3_a1dennhaawmhw6] (Substack) Thrive Gynecology [https://thrivegyn.com/about-us/] Books “It's Not Hysteria: Everything You Need to Know About Your Reproductive Health (but Were Never Told) [https://www.amazon.com/Its-Not-Hysteria-Everything-Reproductive/dp/1250894158],” by Dr. Karen Tang “The New Perimenopause: An Evidence-Based Guide to Surviving the Zone of Chaos and Feeling Like Yourself Again [https://www.amazon.com/New-Perimenopause-Evidence-Based-Surviving-Yourself/dp/0593736613],” by Dr. Mary Claire Haver “The New Menopause"⁠ [https://www.amazon.com/New-Menopause-Navigating-Through-Hormonal/dp/B0CKBZ4K1Z/ref=sr_1_3?crid=10GNBSGVPDFJZ&dib=eyJ2IjoiMSJ9.djG88jtefTqLpTg36Li8QIefDxRPHA-WKVyCC9DQ7X71Ad734j96bPWX-yewnsv9Pqm7WCali5P5-h2eixUH_yHkbz1DHy2rQFoQSh7O92HNwttIL_ZBgXVor81D-Z3sbsfBh7JOJXDQwUuhWNnA5LHbsuI1CyhIyjtRm6_DXYJFaWrkYTjJeqJyFBnBZfgTprhlgJe_RZoWH9pOY6S9XzRapnMjnZgOq7PBA7Wy2KM.ZfI9WXwN58225D-i3qDhw4ZlXZO4pt8rPX1nAKiBNHM&dib_tag=se&keywords=perimenopause+book+mary+claire&qid=1775810714&sprefix=perimenopause+book+mary+claire%2Caps%2C511&sr=8-3] by Dr. Mary Claire Haver For full show notes, please click here [https://thepauselife.com/blogs/the-unpaused-podcast/endometriosis-and-fibroids-dont-stop-at-menopause-with-dr-karen-tang].

7. juli 20261 h 4 min