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Estrogen Dominance: What Does It Actually Mean?

Estrogen gets a lot of attention, especially when something feels off with our bodies. But estrogen isn’t the enemy. In fact, it’s essential to everything from our menstrual cycles and bone health to our brain, skin, and cardiovascular health.

So what happens when estrogen and other hormones aren’t working together as expected?

What is estrogen dominance?

You may have heard the term estrogen dominance, particularly in conversations about PMS, heavy periods, and perimenopause.

It’s a term commonly used in functional medicine to describe situations where estrogen’s effects are relatively strong compared with progesterone.

It’s important to understand that estrogen dominance isn’t a formally recognized medical diagnosis. But the relationship between estrogen and progesterone is very real.

Estrogen helps build the uterine lining during the first half of the menstrual cycle. After ovulation, progesterone rises and helps regulate that lining.

When ovulation becomes irregular, progesterone production may decrease, changing the way these hormones interact.

Can your estrogen levels be normal?

Yes. Hormone levels naturally fluctuate throughout the menstrual cycle, and a single measurement may not tell the whole story.

A result that appears normal on one day doesn’t necessarily explain what was happening earlier in your cycle or how your hormone patterns may be changing over time.

This is particularly relevant during perimenopause, when estrogen can fluctuate significantly and ovulation may become less predictable.

Understanding the bigger picture

Rather than focusing on whether estrogen is simply high or low, it can be more useful to understand your hormone levels in context. Where are you in your cycle? Are you ovulating regularly? What symptoms are you experiencing? Have those patterns changed? Because when it comes to hormones, context matters just as much as the numbers.

references
  1. Gore AC, et al. EDC-2: Endocrine Society’s Second Scientific Statement on Endocrine-Disrupting Chemicals. Endocr Rev. 2015. doi:10.1210/er.2015-1010
  2. Zierau O, et al. Role of female sex hormones, estradiol and progesterone, in mast cell behavior. Front Immunol. 2012. doi:10.3389/fimmu.2012.00169
  3. Wang HH, et al. Estrogen and cholesterol gallstone formation. Biochim Biophys Acta. 2009. doi:10.1016/j.bbalip.2009.06.006
  4. Bulun SE. Endometriosis. N Engl J Med. 2009. doi:10.1056/NEJMra0804690
  5. Bulun SE. Uterine fibroids. N Engl J Med. 2013. doi:10.1056/NEJMra1209993
  6. Gut microbial β-glucuronidases and the estrobolome. https://pmc.ncbi.nlm.nih.gov/articles/PMC6901331/
  7. Arafah BM. Increased need for thyroxine during estrogen therapy. N Engl J Med. 2001. doi:10.1056/NEJM200106073442302
  8. Egner PA, et al. Broccoli sprout beverage and airborne pollutant detoxication. Cancer Prev Res. 2014. doi:10.1158/1940-6207.CAPR-14-0103

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Hormones
29.10.2026
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Why One Hormone Test Doesn't Tell the Whole Story | Dr. Tara Scott

You've been told your hormone levels are "normal." But what if one blood test isn't telling the whole story?

In the first episode of On the Qynside, Qyn Labs founder and CEO Shilpi Gupta sits down with Dr. Tara Scott, OB-GYN, certified menopause practitioner, and hormone health expert, to explore why hormone testing is more complicated than a single number.

Drawing on more than two decades of experience in hormone health, Dr. Scott shares why hormone fluctuations matter, how traditional testing can miss important context, and why understanding your individual patterns could help change the way we approach women's health.

In this episode, we explore:

  • Why "normal" hormone levels don't always tell the whole story
  • What a single hormone test can and can't reveal
  • The importance of understanding hormone fluctuations during perimenopause
  • Why personalized hormone data matters
  • The gaps in hormone education and women's healthcare
  • What's next for hormone monitoring

Your hormones change. Your understanding of them should, too.

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🎥 Watch the full 9-minute conversation here: https://youtu.be/UWZo2Fe4dpQ

Press
24.09.2026
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Shilpi Shares Her Entrepreneurial Journey with Harvard Women in Entrepreneurship

Qyn Labs founder and CEO Shilpi Gupta recently joined Harvard Women in Entrepreneurship for an inspiring conversation about building a deep tech company, putting customers first, and creating meaningful change through innovation.

What began as an opportunity to share Qyn's mission and the journey behind building a new approach to hormone health became a thoughtful exchange with the next generation of women entrepreneurs.

The students brought ambitious ideas, insightful questions, and a clear understanding of the problems they hope to solve. Their curiosity and enthusiasm reinforced an important belief: entrepreneurship isn't defined by a perfect résumé or a traditional path. It's driven by the willingness to ask difficult questions, challenge existing approaches, and build solutions that make a meaningful difference.

Throughout the conversation, Shilpi shared several lessons from her own entrepreneurial journey and the experience of building Qyn.

You Don't Need a Perfect Résumé to Build a Deep Tech Company

Building a deep tech company requires curiosity, persistence, and a willingness to understand a problem at every level.

While experience can be valuable, it isn't the only path to innovation. Sometimes, approaching an established industry with a fresh perspective allows entrepreneurs to recognize opportunities that others have overlooked.

For aspiring founders, Shilpi emphasized the importance of understanding the layers of the problem they're trying to solve and remaining curious enough to keep learning.

You don't need to have every answer before you begin. You need to be willing to ask questions, seek expertise, and continue learning as you build.

Be Obsessed with the Customer, Not Just the Technology

Technology should exist to solve a real problem.

At Qyn, that principle guides the development of an at-home, blood-based hormone measurement system designed to help women better understand how their hormone levels change over time.

For a woman navigating perimenopause, menopause, or hormone therapy, the goal isn't simply to have access to another piece of technology or another health metric.

She wants to understand what's happening in her body, how her hormones are changing, and what those changes might mean for her individual experience.

By keeping the needs of women at the center of product development, Qyn is working to bridge the gap between isolated hormone measurements and a more personalized understanding of hormone health.

It's a reminder that innovation begins with listening to the people you're building for.

Credibility Is Earned, Not Marketed

Trust is essential when building a product that people may rely on to better understand their health.

For Shilpi, credibility comes from demonstrating real results, being transparent about what a technology can and cannot do, and showing people how their personal health information will be protected.

As Qyn continues to develop its technology, these principles remain central to the company's approach.

Building trust requires more than communicating a compelling vision. It means doing the work to support that vision through science, responsible product development, and a commitment to the people the technology is intended to serve.

Build Something You Believe In

Shilpi also encouraged the students to think deeply about what motivates them to become entrepreneurs.

Her own experiences inspired her to question why women have historically had such limited visibility into their changing hormone levels and what could be possible if hormone measurement became more accessible.

That personal connection helped inspire the creation of Qyn.

But she emphasized that founders don't necessarily need to have experienced a problem themselves to build a meaningful solution.

What matters is finding a problem they genuinely care about solving and being honest about their motivation for pursuing it.

Entrepreneurship requires persistence, especially when building something new. Having a meaningful connection to the work can help sustain that commitment through the inevitable challenges of bringing an idea to life.

Looking Ahead to the Next Generation of Women Entrepreneurs

The conversation at Harvard was an opportunity to share the Qyn story, but it was also a reminder of the extraordinary potential of the next generation of women founders.

Their ambition, curiosity, and thoughtful questions reflect a future in which more women are not only participating in innovation but helping define the problems worth solving.

A special thank you to the Harvard Women in Entrepreneurship board for hosting Shilpi and to every student who participated in the conversation and stayed afterward to continue asking questions.

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We look forward to seeing what you build.

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Interested in what we're building at Qyn?

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Qyn is developing an at-home, blood-based hormone measurement system designed to help women better understand their changing hormone levels over time.

Join our free waitlist to follow our progress, receive early updates, and learn about opportunities to be among the first to experience Qyn.

Join the Qyn Waitlist

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Press
24.08.2026
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Shilpi Gupta on DigitalHealth InvestorTalk: The Consumer Home Healthcare Revolution

The future of healthcare is moving closer to home, and hormone health is no exception.

Qyn Labs founder and CEO Shilpi Gupta recently joined host Steve Wardell on the DigitalHealth InvestorTalk podcast to discuss the rise of at-home medical testing and how emerging technologies are giving consumers more opportunities to take an active role in understanding their health.

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As healthcare continues to evolve beyond traditional clinical settings, Shilpi shares how Qyn is working to bring convenient, blood-based hormone measurement into the home, helping women navigate perimenopause, menopause, and hormone therapy with greater visibility into their changing hormone levels.

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From the growing demand for personalized health data to the future of consumer-driven healthcare, their conversation explores what happens when women have access to more information about their bodies, more frequently.

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Listen to the full conversation on Spotify:

https://open.spotify.com/episode/69RsX7FR7aSwwubqNPqw5y