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Why did nobody tell me about perimenopause when I turned 40?

By More Herself · Updated · 8 min read

The word usually arrives from somewhere other than the surgery.

The short answer

Most of the women writing in these communities did not hear the word perimenopause from a doctor. They found it in a subreddit, from a friend, from their mother, or from a podcast, usually after months of guessing at stress, burnout or something worse. Part of the reason is the age: the menopause most people have heard of is an early-fifties event, so a fortieth birthday rarely comes with the conversation. The useful response is a short one: read the free community wiki, start a one-page record, and book one prepared appointment.

There is a post in the largest perimenopause community whose title is a single furious question, and it scored 1.5K:

Why the heck aren't women given peri and menopause information from their doctor when they hit 40?!

The woman who wrote it thinks her symptoms began at 47. She describes the next three years as guesswork, in one line that a great many readers recognised:

Instead I was piecing together my symptoms with Doctor Reddit.

And then, in capitals, the sentence the whole thread was really about:

THIS IS INFORMATION EVERY WOMAN SHOULD BE GIVEN. Why aren't we?!

If you are reading this because you have just worked out, at 41 or 44 or 46, that the last two years might have a name, this page is for the part after the name. How women actually find out, why the fortieth birthday so rarely comes with the conversation, what to read first, and three things to do this month.

Why did nobody tell me about perimenopause when I turned 40?

Nobody told you about perimenopause at 40 because, for most people, the word menopause means something that happens in your fifties. The average age of menopause in the United States is 52, according to the US National Institute on Aging, and the same source says most women begin the menopausal transition between 45 and 55, and it may last several years. A fortieth-birthday check-up is rarely built around something that sounds ten years off.

The trouble is that the conversation is not ten years off for the women who write in these communities. In the largest perimenopause community, the median stated age is 43, and 67% of stated ages fall between 38 and 47. That is a description of who posts, not a schedule for anyone's body, and a typical window is not a floor. But it does mean the people asking the question most loudly are, in large part, younger than the picture in everyone's head.

The vocabulary does not help either. Perimenopause is the years before periods stop; menopause is the point after twelve months without one. If the only word you have heard is the second one, you have no reason to connect it with a new 3 a.m. habit at 41 while your periods are still arriving. One woman put it with 1,076 upvotes behind her:

I thought menopause = 50s, hot flashes, no period.

How do women actually find out about perimenopause?

Women in these communities mostly find out about perimenopause from each other. The pattern across the main and the adjacent communities is that she almost always works it out herself, from a community, a podcast, a friend or her mother, and rarely from a clinician. A doctor does appear in the stories, but more often after she has raised it than before.

A thread titled simply How many of us didn't even know about Peri? scored 595 and drew 153 comments. The answers have a shape.

The subreddit. The single most common route in the stories we read is the community itself, often found by accident while searching for something else.

I couldn't figure out what was going on and then found this sub and realized I most likely have started perimenopause.

That scored 419.

A friend. From a woman of 41, in a post that scored 125:

I never knew it existed and I have two degrees in biology

She learned the word when a friend of 44 described her own symptoms mid-conversation, and she had to stop her and ask what it meant.

A mother, or a manager. One woman shared an image she had seen with her mother and got back, in a post scoring 108, "oh yeah, makes sense. I started at 39." Another, scoring 266, heard it at work first:

A few months earlier a manager had suggested I look into perimenopause… I had heard the term but it was something I associated with women much older than me.

A podcast. A long interview with a specialist is the other route the community names again and again, often passed on from the subreddit itself.

What almost nobody describes is a doctor bringing it up first, at a routine visit, before anything was wrong. That is the thing the 1.5K post was asking for, and it is still not the usual experience in these communities.

Before anything else: when it is not perimenopause

Working out that perimenopause might explain things is a relief, and relief can make it tempting to file every new symptom under it. Some things should never wait for a month of reading. Go now, the same day, to urgent care or emergency services if you have:

Book a prompt appointment, rather than waiting to see, for bleeding after sex, bleeding between periods, any bleeding after a year without a period, periods stopping before 40, a new lump anywhere, or weight loss you cannot explain. None of those is a perimenopause question first.

What should I read first about perimenopause?

Read the free community wiki first. It lives at menopausewiki.ca, and it describes itself as the official wiki of a menopause community and its Reddit siblings, the two largest subreddits on the subject. It carries no products and no sponsorship. Both subreddits send every newcomer there, and the usual advice in the threads is four words long:

Have you read the wiki? Start there.

That comment scored 120, and it is good advice. The wiki is better than anything a brand will write about what perimenopause is, how the dismissal tends to sound, and what the treatment conversation covers. We say that plainly because it is true, and because a page like ours that tries to compete with it on information would lose and would deserve to.

Three parts are worth an evening:

  1. The home page, read once all the way through, for the shape of the thing.
  2. The page that asks whether this is perimenopause, which is where she usually recognises herself.
  3. The providers page, so you know where to look if your usual clinician will not have the conversation.

Where the wiki stops is where the rest of this site lives. It tells you to track your symptoms and to learn how to ask your doctor. It does not give you the page or the words. Those are below.

One more thing to read, and one thing not to. Do read a few threads in the community, slowly, without posting, because the recognition is half the point. Do not spend money in the first month on a test kit, a supplement stack or a programme that promises the answers. One woman described that market, in a post that scored 47, better than we could:

Buy this herbal blend. Buy this workout schedule. Buy this course.

The three things to do in the first month

The first month is for turning a suspicion into something a clinician can respond to, without losing another year.

1. Read the wiki, this week

One evening, the three pages above. That is the whole task. The point is not to become an expert. It is to have the vocabulary, so that when you sit down with a doctor you are not hearing the word for the first time in the room.

2. Start a one-page record, tonight

One line a day, in the evening, for as long as it takes to get two cycles. The method is set out in full in how to track symptoms for an appointment; the short version is five columns:

Above the grid, write down your last six period start dates, rebuilt from a phone, a diary or a receipt if you have to, and everything you take, prescribed or not.

If your periods have stopped or gone very irregular, you do not need two cycles before you book. Book now and bring what you have.

3. Book one prepared appointment

Book it this week, even if the first slot is a month away. Ask, when you book, whether there is someone in the practice who sees a lot of perimenopause. If the answer is no, the wiki's providers page is where to look.

For many women in these communities the first appointment is not the last. The path she describes is typically two to four years of symptoms and three to six providers before anyone takes it seriously. A page of notes and a prepared sentence will not guarantee the first appointment goes well. They change what it is about: a pattern on paper rather than whether you are a reliable narrator.

Ask, too, for the other common causes to be checked alongside, thyroid and iron among them. That is not a hedge. If something else is going on, you want to know, and asking for it makes the rest of the request harder to wave away.

The conversation at home

The household usually does not know either, and has drawn its own conclusions. One short conversation in a calm week, saying what you think is going on, that it is not about them, and what you are doing about it this month, does more than a run of apologies. If there is a partner, what to tell your husband has the words and the one link to send him. It is the wiki.

You were not supposed to have to find this yourself

The anger in that 1.5K thread is not really about one doctor. It is about having lost time to guesswork, and about learning the word from a stranger online at eleven at night instead of from anyone whose job it was to say it.

Why didn't anyone warn us?

That one scored 1,025, and the answer in these communities is the same every time: nobody did, so they warn each other. The wiki exists because women wrote it for the women after them. The threads exist for the same reason.

You have the word now. Read the free thing first, put the pattern on one page, and have one prepared conversation. The rest of this site is here for the parts that come after, which is most of it.

Questions women ask about this

Why don't doctors talk about perimenopause at 40?

The research we read cannot tell you what any doctor was thinking, and we will not guess. What it does show is that the menopause most people have heard of is an early-fifties event: the US National Institute on Aging puts the average age of menopause in the United States at 52. A fortieth-birthday appointment is not usually built around something that sounds a decade away, so the conversation often does not happen unless she starts it.

How do women usually find out about perimenopause?

In the stories we hand-coded from the life-adjacent communities, the word arrived most often from Reddit or the menopause subreddit itself, then from her own research after doctors had not helped, then from a friend, a mother, a therapist or social media. A doctor raised it unprompted in 3 of the 22 stories. These are counts of posts, not of women, but the direction is consistent: she usually finds the word herself.

What should I read first about perimenopause?

Read the free community wiki at menopausewiki.ca first. It is the official wiki of the two largest perimenopause and menopause communities on Reddit, it carries no products, and it explains what perimenopause is better than any brand will. In the help-seeking threads we read, 'read the wiki' was one of the most repeated pieces of advice to a newcomer.

What should I do in the first month after I suspect perimenopause?

Do three things in the first month. Read the wiki. Start a one-page record tonight: period start dates, night wakings, and your three worst symptoms scored nought to three. Then book one appointment and bring the page and a prepared sentence, asking for the other common causes to be checked as well. Leave the supplement stack and the paid test kit alone until you have done those three.

Is it too late if I am already in my mid-forties and nobody told me?

No. The useful steps are the same at 38 as at 47: get the information from a trustworthy free source, put the pattern on paper, and have one prepared conversation with a clinician who knows your history. What the late discovery usually costs is time already spent guessing, and the anger about that is reasonable. It is not a reason to delay the next step.

You found the word yourself. The next part does not have to be on your own.

More Herself is private one-to-one coaching for women in perimenopause. Sleep, training, food and recovery, built around the week you actually live, and preparation for the appointments you have to have elsewhere. Twelve months, one coach. Start with the three-minute Performance Assessment.

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How this page was written. The language and the frequencies on this page come from our own reading of 39,158 posts — every post made in the two largest perimenopause and menopause communities over the twelve months to September 2026. Those numbers describe posts, not women: they show what gets written about and how often, not how common anything is in the population. Everything practical here is coaching practice, not clinical guidance.

More Herself is a coaching and education company. This page is general information, not medical advice, and it is not a substitute for care from a licensed clinician. It does not diagnose any condition and does not tell anyone to start, stop or change any medication or treatment. Decisions about testing, medication and hormone therapy belong with a qualified provider who knows the full history.