Is HRT safe now? What the FDA actually changed

The short version

Removed	Boxed warnings on cardiovascular disease, breast cancer and dementia — from systemic and vaginal oestrogen products
Kept	The endometrial-cancer warning on oestrogen-alone products
Date	10–11 November 2025
What it is	A reinterpretation of how the 2002 findings were applied
What it is not	A finding that hormone therapy is right for everyone

Why the warnings were there

In 2002 the Women’s Health Initiative reported findings widely communicated as showing hormone therapy increased the risk of breast cancer, heart disease and stroke. Prescribing collapsed almost overnight, internationally, and boxed warnings were added.

Twenty years produced a more complicated picture. Three things about that trial matter:

• The women were older. Average age 63 — many more than a decade past their final period, and not the women who typically start hormone therapy.
• The formulation is no longer standard. A specific oral combination that is not the most commonly prescribed today.
• Absolute risk is not relative risk. The absolute risks were smaller than the headlines made most women believe.

What did not change

The endometrial-cancer warning on oestrogen-alone products remains, and that is not a technicality.

Oestrogen without progesterone, in a woman who still has a uterus, increases endometrial cancer risk. That is the entire reason combination therapy exists.

Nor does the change erase individual contraindications. All of these still matter, and some of them still rule it out:

• A personal history of breast cancer
• Unexplained vaginal bleeding
• Active liver disease
• A history of blood clots

The two things rarely explained well

Timing

The risk-benefit balance is materially different depending on when you start.

Starting near your final period	Starting many years after
Late forties, early fifties	Mid-sixties
The group the re-analysis pointed to	The group the 2002 trial mostly studied

Much of the confusion in public discussion comes from treating those as the same question. They are not.

Route

This is the most clinically useful fact in the whole area, and among the least known.

	Oral	Through the skin
Form	Tablet	Patch, gel or spray
Passes through the liver first	Yes	Largely not
Affects clotting factors	Yes	Largely not
Clot and stroke risk profile	Different from transdermal	Different from oral

What this means for you

It does mean a great deal of what you will find online is out of date. Including on major health sites whose evergreen pages still describe a labelling position that no longer exists.

It does not mean hormone therapy is now recommended for everyone.

What to do with this

Read it, then take it to someone who can examine you and knows your history.

We have a one-page guide of the questions worth asking, built from what women told us their appointments were missing. It is free and there is nothing to buy in it.