Reasons Why HRT Might Be Failing You. Hello everyone, I hope you are well. In today’s post, I will be sharing a guest post from Dr Vanessa Emslie (PhD), a leading expert in female hormonal health and longevity, and the Chief Medical Officer at Will be. Dr Emlise explores why Hormone Replacement Therapy (HRT) doesn’t work the same for every woman — and why some people feel no improvement (or even worse) after starting it in perimenopause. She examines the missing link among HRT, hormone metabolism, and genetics, then introduces three Hormone Archetypes: Hormone Responsive, Hormone Sensitive, and Hormone Silent. She’ll also share the top reasons HRT may not be working, including dose, clearing, and congestion, plus an anonymised case study. Many women start HRT expecting relief, but over 40% stop within the first 12 months, often before they see the benefits.
Reasons Why HRT Might Be Failing You
For many women, the decision to start Hormone Replacement Therapy (HRT) during perimenopause feels like a lifeline. After finally understanding that your increased perspiration, brain fog, low mood, or unexplained irritability are due to perimenopause, you may have been led to believe that HRT is the solution to your midlife crisis.
But then, the unexpected happens – nothing. Or even worse, your symptoms increase, or you get more to add to the list – bloated, anxious, or exhausted. Over 40% of women stop HRT within the first 12 months of starting, potentially missing out on both symptom relief and the benefits of hormones for chronic illness.
As a researcher and clinician specialising in hormonal health, I frequently see this disparity. Women are frustrated and feel broken or that HRT is overhyped. Women are desperate for relief and support, but they often do not receive it, and their physicians struggle to understand why their patients’ responses to HRT vary so widely. My message to them is always the same: it’s not your body (or physician) failing the medicine, it’s the medicine failing to account for your unique genetic blueprint and metabolic pathways.
Standard HRT protocols are often based on a “one size fits all” trial-and-error model. But our hormones don’t operate in a vacuum – they are influenced by our DNA and the lifestyle decisions we make, which have epigenetic effects on gene expression.
This missing link between HRT, perimenopause, hormone metabolism and genetics is the reason Willbe developed FemGene®, an innovative gene diagnostic tool that unlocks the complexity between genetics, hormones and HRT response.
These insights allow us to stop guessing and start prescribing with precision by identifying your unique Hormone Archetype. This phenotype categorisation system can closely predict not only your response to HRT but also what epigenetic support (supplements, lifestyle choices) would help optimise your hormones effectively and safely.
The 3 Hormone Archetypes: Which one are you?
Through FemGene, we categorise your genetic responses to hormone metabolism into three distinct archetypes. Understanding which one you are is the key to unlocking HRT success:
Hormone Responsive
These women have a resilient hormonal feedback loop. Their genetic markers show balanced production, metabolism, and detoxification. They typically tolerate BHRT very well and respond positively to modest interventions. Their system essentially says “yes” to treatment.
Hormone Sensitive
These women are highly reactive to fluctuations. Genetic findings often reveal receptor hypersensitivity or sluggish detox and methylation pathways. Symptoms like migraines, anxiety, and histamine flares feel “amplified”. They’re not fragile; they are finely tuned, requiring careful titration and metabolic support.
Hormone Silent
These women often appear “flatlined”. They may suffer from persistent fatigue and low mood, but show a poor response to standard BHRT. This is often due to genetically fast clearance of hormones or blunted receptor function. They don’t need to be fixed; they need to be reawakened.
The Top 3 Reasons Your HRT May Not Be Working
You Are Treating A “Sensitive” System With A “Responsive” dose.
If you are Hormone Sensitive, a standard starting dose can feel like an assault on your system. Without understanding your hormone metabolism and receptor status, hormones can overload your system, leading to increased side effects rather than relief. In particular, heightened sensitivity to progesterone can also be a trigger for increased anxiety or sleep disruption, which are often the 2 main symptoms progesterone alleviates. Standard blood testing does not assess the progesterone pathways to identify those women who would benefit from personalised progesterone HRT.
You Are “Silent” And Clearing Hormones Too Fast
If you fit the Hormone Silent profile, your body may be genetically programmed to clear hormones before they ever reach your cells. You might be taking your HRT faithfully, but your body is not having time to respond to it, leaving you feeling tired and moody. Genetics helps us determine which nutrients can gently support key hormone variants so your HRT is effective.
Your Detox Pathways are Congested
HRT isn’t just about what goes into your body; it’s about how it gets out. If your FemGene report shows reduced efficiency for Phase I or Phase II detoxification (including methylation variants like COMT or MTHFR), hormones can circulate longer than they should, leading to toxic build-up and symptoms like breast tenderness or weight gain rather than improved vitality.
That Being Said
When genetics, detoxification capacity and receptor sensitivity aren’t considered, even the most well-intentioned prescription can miss the mark. What looks like a HRT failure is usually a precision failure.
That’s exactly where genomic insight changes the outcome. If HRT hasn’t delivered what you were promised, the next step isn’t to quit, it’s to test, personalise, and finally align treatment with how your body actually works. Then you will get the results you need.
I hope you enjoyed that.
Talk soon.
About The Author
About The AuthorDr Vanessa Emslie (PhD) is a leading expert in female hormonal health and longevity, and the Chief Medical Officer at Willbe. Willbe is a UK-based female health and longevity company, redefining perimenopause as the front door to female longevity. Combining genetics, hormone testing, and bioidentical HRT, Willbe’s Hormogenetics™ platform offers predictive, personalised healthcare that empowers women to extend their health span. Through the development of FemGene®, Willbe helps women move past trial-and-error medicine to find a personalised, data-driven path to hormonal harmony. Willbe’s mission is to transform women’s health from reactive to preventive and to save billions of women from the cost of unnecessary, absolutely preventable suffering.
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8 Comments
Jocelyn @ Hip Mama's Place
I’ve heard so much about HRT and how it helps women in peri-menopause and menopause. I am personally looking into it. Thanks for the great article.
Elizabeth F
There is so much conflicting information on HRT that it is often hard to keep track of what is/isn’t working.
Sometimes, I wonder why all these experts aren’t communicating with each other about genomic insights.
To add to the confusion, we also have celebrities pushing their products on the same topic.
That said, I found this article informative. The researcher made sense in that we are all unique and there isn’t a one size fits all treatment for HRT.
Yonca Nihal
A timely topic! I appreciate learning more about how HRT impacts women differently.
jerry godinho
Thank you for breaking down such a complex topic with compassion and clarity. It’s so helpful to see that feeling like HRT “isn’t working” doesn’t mean something’s wrong with you, just that the therapy might need fine-tuning. The reality that hormone doses, delivery methods, metabolic and lifestyle factors, or even things like thyroid and gut health can all influence how well HRT works makes this feel both relatable and practical. Your insights encourage a thoughtful conversation with healthcare providers rather than frustration or giving up, which is exactly the kind of support many people need on their hormone health journeys.
Kat
It is frustrating when a medical fix fails to deliver on big promises. Vanessa clearly explains why some women feel worse despite following the advice. I find the statistics about people quitting within a year quite eye opening.
bEN
I had no idea HRT was so intricate. It’s so much more than starting with a low dose and ramping up. Very intriguing.
Beth
This was such an eye-opening read. I’ve always thought that HRT was just dialing in a dose and feeling better!
Alejandra
Very interesting post, glad I found it because I feel that my HRT is not working. I thought it was me, but now I think I’ll check with my doctor based on what you shared here.