Few topics in women's health carry as much confusion as HRT. Some people are told it's dangerous and to avoid it at all costs. Others are told it's a straightforward fix for every symptom of menopause. Neither of those is accurate, and the gap between what the evidence actually says and what most people believe is genuinely large, mostly because of one study from 2002 that got badly misreported and took over twenty years to properly correct.
What HRT actually is
Hormone replacement therapy replaces the oestrogen, and often progesterone, that your body produces less of during perimenopause and menopause. It doesn't add anything foreign to your system, it's replacing hormones your body was already making at higher levels before this transition.
There are two main types:
- Oestrogen-only HRT, usually prescribed if you've had a hysterectomy, since you don't need progesterone to protect your womb lining.
- Combined HRT, oestrogen and progesterone together, prescribed if you still have your womb. The progesterone protects the womb lining from the effects of oestrogen alone.
It also comes in several forms, and the form matters more than most people realise:
- Patches, stuck to the skin and changed every few days, releasing a steady dose.
- Gels or sprays, applied daily to the skin.
- Tablets, taken orally.
- Vaginal oestrogen, a cream, tablet, or ring used specifically for vaginal dryness and related symptoms, with minimal absorption into the rest of the body.
Worth knowing: patches, gels, and sprays deliver oestrogen through the skin, straight into the bloodstream. Tablets go through the digestive system and the liver first. This difference is exactly why the risk profile changes depending on which form you use, more on that below.
Where the fear actually came from
In 2002, a large American study called the Women's Health Initiative was stopped early after early results appeared to show HRT increased the risk of breast cancer, heart disease, and stroke. The headlines were immediate and severe, and HRT prescriptions dropped by more than half within a few years, across most of the Western world.
The problem was in how that data got reported, not the data itself. The average age of women in that study was 63, many were more than a decade past menopause, and most were taking an older, oral form of combined HRT that isn't the type most commonly prescribed today. Later, more careful analysis of the same data showed something quite different: for women who start HRT closer to menopause, generally under 60 or within ten years of their last period, the risk picture looks much better, and for many, the benefits outweigh the risks by a meaningful margin.
That correction has been widely accepted in the medical community for years now, but it never got the same headlines as the original scare, which is a large part of why the fear has outlasted the evidence.
What the risks actually look like now
None of this means HRT is risk-free, and it's worth being specific rather than vague about what the real numbers look like.
- Blood clots. Oral tablets carry a small increased risk of blood clots. Patches, gels, and sprays, because they skip the liver's first pass, carry little to no increased risk at all. This is one of the clearest, most consistent findings in the research, and it's a big part of why transdermal HRT (through the skin) is now the more commonly recommended starting point.
- Breast cancer. Combined HRT is associated with a small increase in risk with longer-term use, roughly comparable to other everyday lifestyle factors like being overweight or drinking regularly. Oestrogen-only HRT doesn't carry the same increase, and may even be associated with a slightly lower risk in some studies.
- Heart disease and stroke. For women who start HRT within ten years of menopause, the evidence doesn't show an increased risk, and some research suggests a protective effect on heart health. Starting HRT for the first time many years after menopause is where the risk profile shifts, which is part of why timing matters as much as the decision itself.
What the benefits actually look like
Symptom relief is the most immediate benefit, and often the most significant. Hot flushes, night sweats, sleep disruption, and mood symptoms all typically improve substantially, often within weeks.
Beyond symptoms, HRT also has a genuine protective effect on bone density, reducing the risk of osteoporosis and fracture later in life, since oestrogen plays a direct role in maintaining bone strength. There's also reasonable evidence for benefits to long-term cognitive and cardiovascular health when started at the right time, though this is an area where research is still developing.
Common myths, addressed directly
"HRT causes cancer"
This isn't accurate as a blanket statement. Oestrogen-only HRT isn't linked to an increased breast cancer risk. Combined HRT carries a small increase with longer use, similar in scale to other common lifestyle risk factors, not a dramatic one.
"You have to come off it after a few years"
There's no fixed cutoff. The decision to continue or stop is individual, based on your own symptoms, risk factors, and how you feel, reviewed periodically with a practitioner rather than governed by an arbitrary timeline.
"Natural alternatives are just as effective"
Some lifestyle changes and non-hormonal treatments do help with specific symptoms, and they're worth trying if you'd prefer to avoid hormones. But for significant symptom relief, particularly for hot flushes and night sweats, the evidence for HRT's effectiveness is considerably stronger than for most alternatives.
"It's only for hot flushes"
Hot flushes get the most attention, but HRT is also commonly used for mood changes, sleep disruption, joint pain, vaginal dryness, and the longer-term protective effects on bone health mentioned above.
Who might be advised against it
HRT isn't right for everyone. It's generally not recommended for people with a history of certain cancers, particularly hormone-sensitive breast cancer, a history of blood clots (particularly with oral forms), certain types of liver disease, or unexplained vaginal bleeding that hasn't been investigated. This is exactly the kind of thing a practitioner needs to review your actual history for, rather than something to self-assess.
How to actually have this conversation
Going in prepared makes a real difference to how useful the appointment is. Worth having ready:
- A note of your specific symptoms and how long you've had them
- How much they're affecting your daily life, work, sleep, relationships
- Your personal and family medical history, particularly around blood clots, breast cancer, and heart disease
- Any HRT you've already tried, and what happened
- Specific questions, don't be afraid to ask directly about transdermal versus oral options, given the difference in risk profile covered above
If a practitioner dismisses your symptoms or won't discuss options beyond a brief mention, it's entirely reasonable to seek a second opinion. Menopause care has improved significantly in recent years, but not every practitioner has kept equally up to date, and you're entitled to a proper conversation about what's actually right for you.
This is for informational purposes and doesn't replace medical advice. If anything here concerns you, please speak with a GP or practitioner.