10/14/2026
Have you ever felt like your body changed almost overnight somewhere in your 40s or 50s?
Well, it turns out there may actually be some science behind that feeling.
A fascinating new study published October 12 in Nature Medicine looked at nearly 300 million routine blood and urine test results to see what happens to different systems in the body around menopause.
Here’s what researchers found.
We already know that hormone changes don’t happen overnight. In fact, they can begin 12 to 15 years before a woman’s final menstrual period.
But what’s interesting is that several lab markers, including those related to cholesterol, bone metabolism, liver function, and kidney function, showed more abrupt changes right around that final period.
In other words, while the menopause transition happens over years, some of the changes happening throughout the body may be much less gradual than we previously thought.
And food for thought... Those changes tended to be smaller in women who were using menopausal hormone therapy.
Now, before anyone interprets that to mean hormone therapy prevents all of these changes, there’s an important distinction we need to make.
This was an observational study. Researchers looked at what happened to women who did and didn’t use hormone therapy. They didn’t randomly assign women to treatment.
That’s important because women who choose hormone therapy may differ in other ways from women who don’t. So the study shows an association, but it doesn’t prove that hormone therapy caused those smaller changes. And changes in lab results don’t necessarily mean someone is developing a disease.
Still, I think this study is important.
We spend an awful lot of time talking about hot flashes, night sweats, irregular periods, and weight gain during menopause.
But menopause involves much more than reproductive hormones and bothersome symptoms. Changes during this time can affect multiple systems throughout the body, including systems involved in our cardiovascular, bone, and metabolic health.
My takeaway?
We need to stop thinking about menopause as something we only need to address when symptoms become unbearable.
That doesn’t mean every woman needs hormone therapy. It means women deserve to understand what’s happening in their bodies, what their individual risks are, and what options are available.
And ideally, those conversations should begin well before the final menstrual period, not years afterward.
Because menopause isn’t just about getting through hot flashes. It’s also an opportunity to think seriously about how we protect our health for the next 20, 30, or even 40 years.
