Let me say something that might ruffle a few feathers in the wellness world right now:

We are blaming perimenopause for A LOT.

Tired all the time? Perimenopause. Anxious for no reason? Perimenopause. Can't focus, can't sleep, gaining weight, feeling like a completely different person? Perimenopause, perimenopause, perimenopause.

And look — sometimes it IS perimenopause. This is a real, significant hormonal transition that affects millions of women, often in profound and under-recognized ways. I am absolutely not here to dismiss it.

But here's the thing that's been sitting with me lately, both as a clinician and as someone who cares deeply about women's health: when we assume everything is hormones, we risk missing what's actually going on. And that matters — because the right support for the right diagnosis changes everything.

So let's talk about what perimenopause actually IS, how it's actually diagnosed, and what else might be in the picture that we really cannot afford to overlook.

First things first: perimenopause is a CLINICAL diagnosis

Here's something that surprises a lot of people: there is no lab test that definitively confirms perimenopause. No bloodwork comes back stamped "CONGRATULATIONS, YOU ARE OFFICIALLY IN PERIMENOPAUSE." It doesn't work that way.

Perimenopause is diagnosed clinically — meaning it's based on your symptoms, your history, and the pattern of what's happening in your body over time. The two hallmark symptoms that most strongly point toward perimenopause are:

Vasomotor symptoms — hot flashes

Vaginal dryness (also called genitourinary syndrome of menopause, or GSM)

When these are present in a woman typically in her mid-40s, but can be late thirties or older, aside from changes in her menstrual cycle, perimenopause becomes the most likely explanation. And in those circumstances, Menopausal Hormone Therapy (MHT) is a well-supported and often very appropriate option worth discussing with your doctor.

But here's where I want to slow down and ask the harder question: what about all the other symptoms that get folded into the perimenopause bucket — the fatigue, the brain fog, the anxiety, the weight changes, the low mood — when perimenopause might only be PART of the story, or not the story at all?

The mimics: what else could this be?

This is the part of the conversation I don't think we're having loudly enough. There are several conditions that can look remarkably similar to perimenopause — and they are genuinely common in women in their 40s and 50s. They can exist alongside perimenopause, be triggered by the same life stage, or be flying completely under the radar while hormones get all the attention.

Thyroid dysfunction

If I had a dollar for every time a woman came in convinced she was perimenopausal and we found a thyroid problem instead — or as well — I would have a lot of dollars.

Hypothyroidism (underactive thyroid) can cause fatigue, weight gain, brain fog, low mood, cold sensitivity, and irregular periods. Hyperthyroidism (overactive thyroid) can cause anxiety, heart palpitations, heat intolerance, insomnia, and — yes — hot flashes. The overlap with perimenopause symptoms is significant and the two conditions can absolutely coexist.

TSH is a relatively simple blood test. If you haven't had your thyroid checked recently and you're navigating a lot of these symptoms, that is a very reasonable place to start.

Iron deficiency and anemia

Women in perimenopause often experience heavier or more irregular periods before cycles taper off. Heavier bleeding = more blood loss = increased risk of iron deficiency, which can cause profound fatigue, poor concentration, shortness of breath, heart palpitations, and that bone-deep exhaustion that no amount of sleep seems to fix.

Iron deficiency is extremely common in women of reproductive age and remains one of the most underdiagnosed contributors to "I just don't feel like myself." A full iron panel — not just hemoglobin, but ferritin especially — is worth having.

Blood sugar dysregulation and insulin resistance

This one is sneaky. Insulin resistance (where your cells stop responding well to insulin) becomes more common as estrogen declines — which means perimenopause and blood sugar dysfunction often show up together and amplify each other.

Symptoms can include fatigue after meals, brain fog, weight gain particularly around the midsection, sugar cravings, low energy, and mood instability. A fasting glucose and insulin, or an HbA1c, can give you a much clearer picture of what's happening here.

Adrenal dysfunction and chronic stress

The adrenal glands produce cortisol — your primary stress hormone — and they also produce a small but meaningful amount of estrogen and other hormones, which becomes more significant as ovarian hormone production declines.

When someone has been running on adrenaline and cortisol for years (and honestly, which 45-year-old woman HASN'T?), the adrenal glands can become dysregulated. This can look like: waking at 3am wide awake, crashing hard in the afternoon, feeling wired but tired, struggling to recover from stress, and a general sense of being completely depleted.

Cortisol dysregulation doesn't always show on standard bloodwork — a four-point salivary cortisol test paints a much more accurate picture of what's happening across the day.

Mental health conditions

Anxiety and depression are not just "hormonal mood swings." They are real, distinct clinical conditions that deserve proper assessment and support — and they are particularly likely to emerge or intensify during the perimenopause years due to the neurological effects of fluctuating estrogen.

Low estrogen affects serotonin, dopamine, and GABA — the neurotransmitters that regulate mood, motivation, and anxiety. So yes, hormonal shifts can absolutely contribute to mental health symptoms. But that doesn't mean the answer is always hormonal. Proper mental health screening, and access to appropriate support (therapy, psychiatric care, or both), is not something we should be routing around by assuming it's "just perimenopause."

Autoimmune conditions

Several autoimmune conditions — including rheumatoid arthritis, lupus, and Hashimoto's thyroiditis — commonly emerge or flare in women during their 40s and 50s, often triggered or worsened by hormonal changes and the immune system shifts that accompany them.

Symptoms like joint pain, fatigue, brain fog, and mood changes can all be features of autoimmune disease, and these conditions require specific diagnosis and management that goes well beyond hormonal support. Relevant antibody testing and inflammatory markers can help rule these in or out.

Perimenopause AND something else

Here's the nuance I really want to land: these conditions are not mutually exclusive with perimenopause. Many women are experiencing BOTH a genuine hormonal transition AND a thyroid issue, OR perimenopause AND iron deficiency, OR fluctuating estrogen AND significant adrenal fatigue. The hormonal transition can actually unmask or worsen other underlying conditions that were quietly brewing.

This is exactly why a thorough workup matters — not to rule out perimenopause, but to make sure we're seeing the whole picture.

So what should you actually do?

If you're in your 40s or early 50s and not feeling like yourself, here's what I'd encourage:

Don't self-diagnose via Instagram. (I say this with love, as someone who has a perimenopause Instagram series running RIGHT now 😄.) Social media is brilliant for awareness and validation — it is not a substitute for a proper clinical assessment.

Ask for a thorough workup. This should include — at minimum — thyroid function (TSH, free T3, free T4), a full iron panel including ferritin, fasting glucose and insulin, a complete blood count, and vitamin D. Depending on your history, additional testing may be warranted.

Track your symptoms carefully. Because perimenopause is a clinical diagnosis, your symptom history matters enormously. A good symptom journal — tracking your cycle, sleep, mood, energy, hot flashes, and anything else that feels off — gives your practitioner invaluable information.

Work with someone who will look at the whole picture. This is where I'll gently wave my hand. At Elevate, both myself and Dr. Emma approach these concerns by looking at everything together — your labs, your history, your lifestyle, your symptoms — rather than defaulting to a single explanation. If you've been feeling off and haven't found a clear answer yet, that's exactly the kind of assessment we love to dig into.

Is It Really Perimenopause? Why Getting the Diagnosis Right Actually Matters