5 Hormonal Imbalances That Mimic Depression and Anxiety

You’ve been doing everything “right” — therapy, maybe even medication — but something still feels off. The fatigue won’t lift, the anxiety keeps humming in the background, and you’re starting to wonder if your provider is missing something. You might be onto something.

If you’ve been treated for depression or anxiety without much improvement, there’s a question worth asking: *what if it’s not just your brain chemistry?* Hormonal imbalances that cause depression and anxiety are far more common than most people realize — and they’re routinely overlooked in standard psychiatric care. That’s because conventional mental health visits rarely include lab work. You describe your symptoms, you get a diagnosis, you get a prescription. But your hormones never enter the conversation.

At Willow & Stone Health, we take a different approach. We believe your hormones and mental health are deeply intertwined — and that you deserve a provider who looks at the full picture before reaching for a prescription pad. Here are five hormonal imbalances we see regularly in our practice that look almost identical to depression and anxiety.

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1. Low Thyroid (Hypothyroidism — The #1 Missed Diagnosis)

If we had to pick a single hormone issue that flies under the radar in mental health care, it would be low thyroid function. Hypothyroidism — when your thyroid gland doesn’t produce enough thyroid hormone — can cause fatigue, brain fog, weight gain, low motivation, and a flat, heavy mood that looks exactly like major depression. Many of our patients have been treated for depression for years before anyone thought to check their thyroid.

Here’s the catch: even when thyroid labs are ordered, they’re often incomplete. Most providers only check TSH (thyroid-stimulating hormone), and they use outdated reference ranges. A TSH of 4.0 mIU/L might be flagged as “normal” on a standard lab report, but many integrative providers — including us — consider optimal TSH to be closer to 1.0–2.5 mIU/L. And without also checking Free T3, Free T4, and thyroid antibodies, you could have subclinical hypothyroidism or early Hashimoto’s thyroiditis (an autoimmune thyroid condition) and never know it.

At Willow & Stone Health, thyroid assessment is part of our standard workup when mood symptoms aren’t responding to treatment. We run a comprehensive thyroid panel — not just TSH — and we interpret the results through a functional lens, looking at where you’ll actually feel your best, not just where you technically avoid a diagnosis.

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2. Low Testosterone (In Both Men AND Women)

Most people associate testosterone with men, but women produce it too — and need it for energy, motivation, mental clarity, and mood stability. When testosterone drops, the symptoms can look like textbook depression: low drive, loss of interest in things you used to enjoy, irritability, fatigue, and difficulty concentrating. Sound familiar?

In men, testosterone naturally declines about 1% per year after age 30, but stress, poor sleep, and certain medications (including some antidepressants) can accelerate the drop. Total testosterone levels below 300 ng/dL often correlate with noticeable mood changes, though some men feel the effects at levels that are still technically “in range.” In women, even small dips in testosterone — which can happen after starting hormonal birth control, during perimenopause, or after pregnancy — may cause a significant shift in energy and emotional resilience.

This is one of those hormonal mood changes that can be life-altering to identify. We’ve seen patients who spent years believing they were “just depressed” feel dramatically better once their testosterone levels were addressed. Our approach goes beyond thyroid testing to include a full sex hormone panel, because we know that hormones and depression are connected in ways that a standard psychiatric evaluation simply doesn’t capture.

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3. Estrogen Dominance or Decline

Estrogen is a master regulator of serotonin — one of the key neurotransmitters involved in mood, sleep, and emotional stability. When estrogen fluctuates rapidly (as it does in PMS, perimenopause, and postpartum periods) or when it’s chronically elevated relative to progesterone (a pattern called estrogen dominance), the result can feel indistinguishable from an anxiety disorder or a depressive episode.

Women in perimenopause — which can begin as early as the late 30s — often describe a creeping sense of dread, new-onset panic attacks, insomnia, and a sadness that seems to come out of nowhere. These symptoms frequently get attributed to “stress” or treated with an SSRI, without anyone connecting them to shifting estrogen and progesterone levels. On the other side, estrogen dominance (often driven by excess body fat, environmental xenoestrogens, or sluggish liver metabolism) can cause irritability, anxiety, bloating, and mood swings that cycle with the menstrual period.

This is exactly why we ask detailed questions about menstrual cycle timing, hormonal birth control use, and symptom patterns at Willow & Stone Health. Understanding how hormonal imbalances mimic psychiatric conditions is central to our practice. If your anxiety spikes like clockwork every month, that’s information we can use — and it may point to a hormonal solution rather than (or alongside) a psychiatric one.

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4. Cortisol Dysregulation (HPA Axis Dysfunction)

Cortisol is your body’s primary stress hormone, and it’s supposed to follow a predictable daily rhythm — highest in the morning to help you wake up, gradually declining through the day, and lowest at night so you can sleep. But when you’ve been under chronic stress for months or years, this rhythm can become dysregulated. Your cortisol may stay elevated at night (hello, 2 a.m. anxiety), crash in the morning (hello, can’t-get-out-of-bed fatigue), or flatten out entirely.

This pattern — sometimes called HPA axis dysfunction (referring to the hypothalamic-pituitary-adrenal axis, the system that controls your stress response) — can produce a constellation of symptoms that overlap almost perfectly with generalized anxiety disorder, panic disorder, and major depression. You might feel wired but tired, on edge for no clear reason, unable to handle stress that you used to manage easily, and emotionally raw. It can also disrupt sleep architecture, making you wake feeling unrefreshed no matter how many hours you’re in bed.

We assess adrenal health and cortisol patterns as part of our integrative workup because, frankly, can hormones cause anxiety? Absolutely — and cortisol is often the biggest culprit. A four-point salivary cortisol test (measuring cortisol at morning, noon, afternoon, and night) gives us a clear picture of your daily rhythm and helps us target interventions — whether that’s adaptogens, lifestyle shifts, nervous system support, or adjusting medications that may be making the pattern worse.

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5. Insulin Resistance (Blood Sugar and Mood)

This one surprises people, but the connection between blood sugar and mood is powerful. Insulin resistance — when your cells stop responding efficiently to insulin, forcing your body to produce more and more of it — doesn’t just set the stage for type 2 diabetes. It also creates a rollercoaster of energy crashes, irritability, brain fog, and anxiety that can dominate your day.

Here’s what it looks like in real life: you eat a meal, your blood sugar spikes, insulin surges to bring it down, and then your blood sugar drops too fast — triggering a stress response. Your body releases cortisol and adrenaline to compensate, and suddenly you’re shaky, anxious, irritable, or craving sugar again. Over time, this cycle wears on your nervous system and can look a lot like an anxiety disorder or even cyclothymia (a mild form of bipolar mood cycling). A fasting insulin level above 10 µIU/mL, combined with a fasting glucose over 95 mg/dL, can be early signals — well before a formal diabetes diagnosis.

At Willow & Stone Health, we check metabolic markers as part of our comprehensive assessment because we understand that hormones and mental health include metabolic hormones, not just the ones most people think of. Addressing insulin resistance through dietary changes (especially reducing refined carbohydrates and emphasizing protein and healthy fats at every meal), movement, and sometimes targeted supplements like berberine or inositol can produce a noticeable improvement in mood stability within weeks.

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What to Do Next

If you’ve read through this list and found yourself nodding along to one — or several — of these patterns, please know: you’re not imagining things, and you’re not “treatment-resistant.” You may simply be dealing with a root cause that hasn’t been identified yet. Hormonal imbalances that cause depression and anxiety are real, common, and treatable — but only if someone actually looks for them.

The frustrating reality is that most mental health visits last 15 minutes and involve zero lab work. That model works fine for some people, but if you’ve been struggling despite doing everything you’ve been told, it might be time for a deeper investigation. You deserve a provider who listens to the full story, orders the right labs, and connects the dots between your body and your brain.

At Willow & Stone Health, that’s exactly what we do. If you’re ready for answers instead of guesses, schedule a comprehensive consultation and get a comprehensive hormone panel — it might be the missing piece you’ve been looking for.

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Frequently Asked Questions

Can hormonal imbalances really cause depression and anxiety?

Yes. Hormones like thyroid hormone, cortisol, estrogen, testosterone, and insulin all directly influence neurotransmitter production, brain inflammation, and nervous system function. When these hormones are out of balance, the resulting symptoms — fatigue, low mood, irritability, panic, brain fog — can be clinically identical to depression and anxiety. Research suggests that up to 10–15% of patients diagnosed with depression may have an undiagnosed thyroid condition alone.

How do I know if my depression is hormonal or psychiatric?

There’s no single test that draws a clean line, but there are clues. If your mood symptoms started after a hormonal shift (postpartum, perimenopause, stopping birth control), if they cycle with your menstrual period, if standard antidepressants haven’t worked well, or if you also have physical symptoms like fatigue, hair loss, or weight changes — those are signals worth investigating with a comprehensive hormone panel.

What labs should I ask for if I think hormones are affecting my mood?

A thorough workup might include a full thyroid panel (TSH, Free T3, Free T4, thyroid antibodies), testosterone (total and free), estradiol, progesterone, DHEA-S, a four-point salivary cortisol test, fasting insulin, fasting glucose, and hemoglobin A1c. At Willow & Stone Health, we tailor the panel to your specific symptoms and history.

Can men experience hormonal depression?

Absolutely. Low testosterone is one of the most common and most overlooked contributors to depression in men over 30. Symptoms include loss of motivation, fatigue, irritability, reduced libido, and difficulty concentrating — all of which overlap significantly with major depressive disorder.

Does Willow & Stone Health accept insurance for hormone testing?

We recommend reaching out to our office directly or scheduling a consultation to discuss your specific insurance and coverage questions. Our team can walk you through what to expect and how to make the process as straightforward as possible.