A menopause specialist's honest guide to hormone replacement therapy, the evidence behind it, and the myths that still keep women from getting the treatment they need.

By Dovile Kalvinskaite
OBGYN | Menopause Specialist | Lifestyle Medicine Doctor | High-Performance Coach

The conversation we should be having

If you've sat in a GP's office in the last twenty years and asked about hormone replacement therapy, there's a fair chance you left with more fear than information. Maybe you were told it causes breast cancer. Maybe you were told you should stop after five years. Maybe you were told to "try to push through" — as if the hot flushes, the broken sleep, the brain fog, the joint pain, the dryness, and the mood changes were a moral test rather than a medical condition.

I see the consequences of that conversation every week in my clinic. Women in their fifties who've spent a decade suffering through symptoms that have a treatment. Women in their sixties whose bones are weaker than they had to be. Women who tried HRT, were taken off it abruptly, and were never told why.

So I want to do something simple here: walk through what HRT actually does, what it doesn't, and what the evidence — the current evidence, not the headlines from 2002 — says about who it's for.

This isn't medical advice for you specifically. It's the conversation I wish more clinicians were having.

Why we're still arguing about a study from 2002

To understand the current confusion, you need to understand one study: the Women's Health Initiative, published in 2002. The headlines from that paper drove a global collapse in HRT prescribing — prescriptions fell by more than half in many countries within a year — and the effects rippled for two decades.

What the headlines said: HRT causes breast cancer and heart disease.

What the study actually showed, looking at it carefully twenty years later: in a population of women whose average age was 63 (not the typical age of someone starting HRT for menopausal symptoms), using a specific formulation that's now used much less commonly, there was a small absolute increase in breast cancer risk in one arm of the trial — and no increase, possibly a decrease, in the oestrogen-only arm. The cardiovascular signal was driven largely by women who started HRT more than a decade after menopause.

Subsequent re-analyses, longer follow-up, and a generation of newer evidence have substantially reframed the picture. The "timing hypothesis" — the idea that HRT started within roughly ten years of menopause behaves very differently than HRT started in your seventies — is now mainstream. Modern formulations (transdermal oestrogen, micronised progesterone) have different risk profiles than the older oral conjugated oestrogens used in WHI.

None of this means HRT is risk-free. Nothing in medicine is. It means the simple sentence "HRT causes cancer" has done an enormous amount of damage to women who could have been helped, and it deserves to be retired.

What HRT actually does

Here's what the evidence supports, in plain language.

It treats hot flushes and night sweats — better than anything else

This is HRT's strongest, clearest indication. For women with moderate to severe vasomotor symptoms — the hot flushes, the night sweats, the surges of heat that interrupt meetings and ruin sleep — HRT works, and it works well. The evidence has been consistent for decades. Non-hormonal options exist, and they have a place, but nothing currently available matches HRT for symptom control.

When hot flushes go, sleep often improves. When sleep improves, the "brain fog" women so often describe tends to lift with it. A lot of what gets called "menopausal cognitive decline" is, in reality, sleep deprivation.

It treats vaginal dryness, painful sex, and recurrent urinary infections

This is probably the most under-treated area in midlife women's health. The technical name is genitourinary syndrome of menopause. The symptoms include vaginal dryness, painful intercourse, urinary urgency, and a vulnerability to recurrent urinary tract infections that many women didn't have a year earlier.

Topical (local) vaginal oestrogen — creams, pessaries, rings — is remarkably effective and has a strong safety profile. It can be used long-term. It can often be used after most breast cancers (with your oncology team). The systemic absorption is minimal. And yet many women are told to live with the symptoms or buy lubricant.

You don't have to live with them.

It protects your bones

HRT reduces fracture risk while you're on it. For women at risk of osteoporosis, and "at risk" includes most women in their fifties and sixties. That's a serious benefit. It's not the only tool we have, but it's a meaningful one, and for some women it's the right one.

It may be cardiovascularly protective when started early

The data here are more complex than a blog post can fully unpack, but the broad picture: HRT started within ten years of menopause, or before age 60, generally appears to be cardiovascularly neutral or favourable. HRT started much later, in women with established cardiovascular disease, is a different conversation.

The "timing window" matters. The conversation with your clinician should reflect when you'd be starting, not just whether.

It helps with mood symptoms tied to the hormonal shift

For some women, mood changes around perimenopause and early menopause respond well to HRT, particularly when symptoms cluster with the other hormonal features. HRT is not an antidepressant, and depression should be treated as depression. But many women have been told they have "depression" when what they actually have is hormonal upheaval that the right treatment would settle.

"HRT is a treatment, not a personality"

 

What HRT doesn't do

Now to the myths. These are the things that keep women from treatment, and they deserve to be said clearly.

It doesn't cause breast cancer the way you've been told

This is the big one, so let's take it seriously.

The breast cancer risk associated with HRT is real but modest, smaller than many widely accepted lifestyle risks (regular alcohol consumption, for instance), and highly dependent on the type of HRT, the duration of use, and the woman taking it. For oestrogen-only HRT, used in women without a uterus, some long-term data have actually shown a reduced breast cancer risk. For combined HRT, the risk increases modestly with duration, and the type of progestogen used matters considerably.

In practical terms: for most women, the breast cancer signal is one of several things to weigh, not a categorical contraindication. The size of the risk is comparable to risks women routinely accept for other treatments and lifestyle choices, which is why the conversation needs to be about your situation, not a headline.

It doesn't have to stop at five years, or at 60, or at any arbitrary number

There is no evidence-based cut-off that says HRT must stop at any particular age. The decision to continue or discontinue is individual, based on benefits you're still getting, symptoms that would return, your bone and cardiovascular picture, and your preferences. Many women take HRT into their seventies safely. Some stop after a year. The duration should be decided with you, not done to you.

It's not an anti-ageing drug

HRT will not make you young again. It will not undo decades of sun damage, replace the muscle mass you've lost, or be a substitute for sleep, strength training, and a reasonable diet. Some marketing (and a lot of social media) implies otherwise. It's not honest, and women deserve honesty.

What HRT does is treat the medical condition of menopause and its symptoms. That's a significant thing. It's not everything.

It doesn't cause weight gain

This one comes up constantly. The weight gain women experience in midlife is largely a consequence of midlife itself — changing body composition, slower metabolism, more sedentary patterns, less sleep and not of HRT. Some women on HRT lose weight as their sleep improves and their mood lifts. Others don't change. HRT is not the cause of midlife weight gain, and starting it is not why the scale moved.

It doesn't fix what isn't menopause

Not every symptom that arrives in your forties or fifties is hormonal. Thyroid disease, sleep apnoea, iron deficiency, depression, ADHD that's becoming unmasked, autoimmune disease. These can all show up in this window and get attributed to perimenopause. HRT won't treat them, and prescribing it without ruling them out is a mistake.

A good menopause clinician will think broadly before they prescribe narrowly.

It isn't right for everyone

There are real contraindications: certain hormone-sensitive cancers, recent venous thromboembolism, active liver disease, certain cardiovascular conditions, undiagnosed vaginal bleeding. There are situations where the risk-benefit balance tips against HRT.

The decision is individual. The point is to have the decision — informed, with a clinician who knows the evidence — rather than have it made for you by the legacy of a single study.

How to have this conversation with your clinician

If you're reading this and recognising your own symptoms, here's a brief script.

Bring a written list of your symptoms: what you have, how often, how much they disrupt your life. Vague descriptions get vague responses; specific descriptions get clinical attention. Mention sleep, mood, cognitive function, intimate symptoms, joint pain, and how everything has changed compared with two or three years ago, even if you're embarrassed.

Ask explicitly: "Based on my symptoms and my history, what would the benefits and risks of HRT look like for me?" That's a different question than "Should I be on HRT?" - and you'll get a more useful answer.

If your clinician won't engage with the question, or dismisses you in under five minutes, or quotes the WHI without nuance, you are allowed to seek a second opinion. Menopause is a legitimate medical specialty. Specialists exist for a reason.

The bigger point

HRT is a treatment, not a personality. It deserves the same evidence-based conversation as any other prescription — without fear, without hype, and without the leftover noise from a study most people quoting it have never actually read.

Women in midlife have spent a generation being told to push through symptoms that have a treatment. The cost of that — in careers, in marriages, in mental health, in osteoporosis prevention not done — is enormous and largely invisible.

You don't have to suffer and you deserve a real conversation. And the evidence is on your side.

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This article is general educational information and does not constitute medical advice for your individual circumstances. If you are considering HRT or have menopausal symptoms, speak with a qualified menopause specialist or your own clinician.