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Exhausted. Depleted. Drained. Wiped out. Chronically Overwhelmed. Barely getting by. Burning the candle at both ends. Adrenal fatigue.* Subclinical depression. Adjustment disorder. The Mehblamumblygrumps. Strained. Burnt out.
We have a lot of words for this. That alone tells you something about how common the experience is. And if you’re reading this, you probably don’t need me to define it for you. Almost everyone I know is living in it, at least sometimes. Those days you wake up tired for no good reason, that have been getting more frequent. That sense of friction showing up in more places than it used to. The kind of tired that sleep doesn’t fix. The growing distance between you and the stuff you used to care about. The sense that your capacity has contracted, that you’re still doing things but doing them worse, slower, with more effort and less of whatever spark used to make it all feel like yours. The weight of a world that seems to be changing faster than any of us can process, where the ground keeps shifting and the future feels less certain every month. The cost of just keeping up. I want to talk about all of it.
What all those words are circling around is the cost of chronic demands that outpace your resources to meet them. That’s burnout.
The World Health Organization classifies burnout (ICD-11 code QD85) as a syndrome resulting from chronic stress that hasn’t been successfully managed. Three components: energy depletion or exhaustion, mental distance or cynicism toward your work, and reduced effectiveness. The WHO calls it an “occupational phenomenon” rather than a medical diagnosis, which means it often doesn’t qualify for treatment coverage, your doctor may not take it seriously, and you’re left living with a real pattern that the medical system has decided isn’t quite real enough.
I should note that the WHO says “work,” but if you’re a caregiver, an activist, a parent, a student, someone navigating chronic illness or systemic oppression, the pattern shows up wherever the chronic strain lives. Burnout doesn’t care whether you’re getting a paycheck for the thing that’s depleting you.
This series is about burnout. But not the wellness-industry version where you take a bubble bath and journal about gratitude. (For the record, I’m not against bubble baths or gratitude journals. Gratitude journal in the bubble bath if you want to. I’ll be pushing back on the version where that’s presented as sufficient.) And it’s not the corporate version where you set better boundaries and everything magically improves. This is my version, where we start with the premise that you’ve probably maxed out your self-care and your circumstances might not change anytime soon and your normal strategies just aren’t enough anymore.
Over the coming weeks, I’ll be sending emails that cover how burnout actually works in your brain, what makes some people more vulnerable to it than others, why rest alone often isn’t enough even though you desperately need it, and what you can actually do about it when the standard advice to “just rest” or “just push through” or “set better boundaries” isn’t realistic. We’ll get into herbal support, sleep architecture, the relationship between inflammation and fatigue, and how to build sustainable practices that work within the constraints you’re living with. I’ll also talk about when burnout stops being burnout and becomes something else, because that transition happens more often than people realize and it matters a lot to catch it.
I’m not going to give you a precise email schedule. These emails are how I’m thinking through and expanding the course manual for our upcoming burnout retreat in March, and writing to you is how I’m working out the ideas. So the pace will be what the pace is. But expect emails more frequently, and know that the series will be thorough.
Before any of that, though, we need to start with something mundane but important: making sure it’s actually burnout.
Not everything that feels like burnout is burnout. This matters because if you have an undiagnosed medical condition causing your fatigue and you treat it as burnout, nothing in this series will help. You’ll do the work, follow the practices, adjust your habits, and nothing will move. The practices work fine. The problem is that you’re solving the wrong thing.
Here are the conditions I see most often mimicking or overlapping with burnout. None of them are exotic. All of them are common, frequently missed, and treatable.
Hypothyroidism slows everything down: energy, cognition, mood, body temperature, digestion. It feels like burnout because the exhaustion is pervasive and your thinking gets foggy. The key difference is that thyroid fatigue doesn’t care about your circumstances. You’ll feel the same exhaustion on vacation as you do at work. Burnout fatigue is context-dependent; it gets at least somewhat better sometimes when the stressor lifts. Ask for a TSH test. If it’s above 3.0 mIU/L, or you have symptoms with a TSH in the “high normal” range, that’s worth a conversation with your clinician.
Iron-deficiency anemia means every cell in your body is running on reduced oxygen. The fatigue is bone-deep, not just sleepiness. Brain fog, shortness of breath with minimal effort, heart palpitations, restless legs. Useful distinction: burnout fatigue often temporarily improves with exercise, while anemia fatigue just gets worse. Ask for a CBC and ferritin. Many labs set the “normal” ferritin range absurdly low. If yours is below 30 ng/mL and you’re exhausted, that’s worth addressing regardless of what the reference range says.
B12 deficiency causes a particular kind of cognitive slowness that looks a lot like burnout’s brain fog, plus fatigue, numbness or tingling, and mood changes. Higher risk if you’re vegan or vegetarian, over 50, or on metformin or proton pump inhibitors. Check serum B12 and methylmalonic acid (MMA), and/or go get a few B12 injections.
Vitamin D deficiency is so common (40-50% of the global population by some estimates) that it’s almost background noise, except that it contributes to fatigue, muscle weakness, and mood disturbance. Many burned-out people are also vitamin D deficient because they’re spending all their time indoors. Fixing it won’t fix the burnout, but it removes one layer of physiological drag.
Sleep apnea is the one that sneaks past everyone. You stop breathing repeatedly during sleep, your body startles awake to restart breathing (often without your conscious awareness), and the deep restorative sleep stages never happen. You can “sleep” nine hours and wake up feeling like you never went to bed. It’s not just overweight middle-aged men; women are dramatically underdiagnosed. If you sleep “enough” and never feel rested, ask for a sleep study.
One more thing always worth checking: what changed in the last few months. Alcohol, even moderate amounts, fragments sleep architecture in ways that look exactly like burnout fatigue the next day. Cannabis can do the same thing, particularly to REM sleep. If your caffeine intake crept up you might be running on a stimulant cycle that feels like energy but is actually borrowing against tonight’s sleep. On the medication side, SSRIs, beta blockers, antihistamines, and gabapentinoids can all cause fatigue or emotional flattening that gets attributed to burnout because the timing often overlaps with a stressful period. If you started, stopped, or changed a medication in the three to six months before your energy tanked, mention that to your clinician before assuming it’s burnout.
Also, none of these conditions is mutually exclusive. You can be burned out and hypothyroid. Burned out and anemic and vitamin D deficient. Chronic stress depletes nutrients, disrupts sleep, and dysregulates the immune system, so burnout itself makes you more likely to develop the very conditions that mimic it. If you’ve been feeling terrible and nothing has helped, a basic panel (TSH, CBC, ferritin, B12, vitamin D, metabolic panel) is worth the effort. Ruling out treatable conditions means the burnout-focused work can actually land.
In our next email, we’ll start mapping the territory. We’ll also start talking about something that might sound counterintuitive: your burnout is your brain doing exactly what it was designed to do under the circumstances you’re in.
With care,
-Thomas
*Adrenal fatigue is not a real condition. We’ll get into why in a later post.