Why am I so tired in perimenopause? It might not be just your hormones

Something has changed, and you cannot quite say when. You are doing what you have always done, eating much the same, keeping the same hours, carrying the same load, and yet you are tired in a way you were not a few years ago. The energy that used to carry you through the week runs out by Wednesday. Sleep does not put it right.

So let us answer the question directly. Yes, perimenopause can leave you exhausted. But whether it is the main reason you feel this way, or one part of a larger picture is worth working out properly rather than assuming. This article explains how the hormonal changes affect your energy, why they are rarely the whole story, and how you would actually know.

What does perimenopause fatigue feel like?

Perimenopause tiredness is often different from the ordinary tiredness of a busy week. It tends to be heavier, less predictable, and slower to lift. Women describe it in fairly consistent ways:

• waking as though you have not slept, even after a full night
• running out of energy far earlier in the day than you used to
• feeling mentally slower, or more forgetful, than is normal for you
• needing much longer to recover after a demanding day
• finding that stress affects you more than it once did

None of these prove that hormones are responsible. But they are the point at which many women start looking for answers, and they are real.

How perimenopause affects your energy

As you move through your forties and into your fifties, oestrogen does not decline in a tidy line. It fluctuates, sometimes considerably, and those shifts reach further than most people realise.

Oestrogen influences how steadily your body handles blood sugar, which affects how even your energy feels through the day. It affects sleep, including how easily you fall asleep and how restorative that sleep is. And it plays a part in how well you recover from stress. So when it starts to change, you can feel the effects across your whole day, even though nothing about your routine has changed.

Very few women wake up one morning feeling like a different person.

This is physiology, not vagueness. It is not in your head, and it is not nothing.

Why hormones aren’t the whole story

Here is where I part company with a lot of what you will have read. When you are tired in perimenopause, you tend to be told one of two things. Either it is simply your age and your hormones, so there is little to be done. Or it is your lifestyle, and if you tried a bit harder it would sort itself out. Neither is satisfying, and neither is quite true.

The reason is that hormonal changes do not happen in isolation. They land on the foundations underneath them: how well you are fuelled, how much stress you are carrying, how well you sleep and recover. When those foundations are already stretched, the hormonal shift lands harder. When they are better supported, the same shift is more manageable.

Many women arrive expecting me to tell them their hormones are the whole story. More often, we find they are one piece of a larger picture.

So the honest answer sits between the two you were given. It is not simply your age, and it is not that you have been careless with your health. It is that the ground was already carrying a great deal before your hormones began to change, which is exactly why the change is so noticeable now. This is also why, for most women, energy has to be rebuilt from the foundations up rather than chased with a single fix.

How do you know if it’s really your hormones?

This is the question worth sitting with, because the popular answer, that you should correct your hormones and feel better, skips a step. You cannot correct what you have not measured.

Your symptoms can raise a suspicion. They cannot confirm one. Two women describing the same tiredness can have entirely different reasons for it, and the only way to tell them apart is to look. Thyroid function is a good example. How you feel might point towards it, but no careful practitioner should tell you that you have a thyroid problem on symptoms alone. That is a conclusion you reach by testing.

So where hormones appear to be part of the picture, testing comes first, arranged privately or through your GP where they are able to run it. Not every tired woman needs a panel, so this is testing where it is indicated, rather than testing for its own sake. A normal result is worth understanding too, because a normal blood test does not always mean that nothing is wrong, which I have written about separately.

There is one more distinction worth making plain. Even when a test does show something, my role as a nutritional therapist is to support the systems involved through food and daily rhythms, not to alter the hormone itself. Supporting your thyroid through nutrition is a different thing from treating it, and where medical treatment is the right route, that belongs with your GP.

Where to start

If you have been wondering whether your tiredness is simply part of perimenopause, or whether something else is contributing, that is exactly the kind of thing worth looking at properly rather than guessing at.

This is the kind of pattern I explore inside The Energy Foundation, my 12-week 1:1 programme for professional women who are tired, running on empty and trying to understand why they no longer feel like themselves.

On a free 15-minute call, we can talk through what has changed, whether testing is likely to help in your case, and where it would make sense to begin. If I am not the right person to help, I will say so.

Not ready to book yet?

Start with my free guide. It explains the four things most likely behind your fatigue, and where to start with each.

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