Coffee and Adrenal Fatigue: Is There a Connection?
Coffee is supposed to be a magical drink that wakes you up, gets you dressed, drives you to work, and then does your work for you. Okay, okay — maybe those last few were a little exaggerated. But still, many people rely on coffee to function during the day.
So what happens when coffee actually makes you crash? As it turns out, drinking too much coffee can actually result in symptoms like exhaustion, jitters, and brain fog. Collectively, these symptoms are sometimes called “adrenal fatigue.” Read on to learn more about adrenal fatigue, how it relates to coffee, and what you can do about it.
What Are the Adrenal Glands?
Your adrenal glands are basically your body's stress-response command center. These two little glands sit on top of your kidneys, pumping out hormones like cortisol and adrenaline — AKA the chemicals that help you outrun danger, power through deadlines, or panic when you’re running late.
When stress hits, the adrenal glands flood your system with these hormones, raising your heart rate and keeping you alert. However, they weren’t designed to handle constant stress. When you’re always running on high alert — thanks to caffeine, long work hours, and doomscrolling — your adrenals can start struggling to keep up.
What Is Adrenal Fatigue?
Adrenal fatigue is the unofficial name for that run-down, sluggish feeling you get after months (or years) of chronic stress. The idea is that your adrenal glands get so overworked that they stop producing the right amount of hormones, leaving you feeling exhausted, foggy, and in desperate need of a nap.
While mainstream medicine doesn’t officially recognize it as a condition, plenty of people swear it’s real. Whether it’s from too much caffeine, too little sleep, or stress overload, adrenal burnout feels like hitting a wall. However, instead of stopping, many people chug another cup of coffee and hope for the best.
How Does Caffeine Affect the Body?
Caffeine isn’t just your morning lifesaver — it’s a full-blown stimulant that kicks your nervous system into high gear. The moment you sip that coffee, the caffeine blocks adenosine (the chemical that makes you feel sleepy), cranks up dopamine, and tells your adrenal glands to pump out more cortisol.
This is great when you need a quick energy boost, but if you rely on caffeine constantly, your body starts running on stress hormones instead of natural energy. Over time, this can mess with your sleep, mood, and your adrenal function. As it turns out, that daily coffee habit might be keeping you wired and exhausted.
3 Ways Coffee Might Contribute to Adrenal Fatigue
So, can coffee actually cause adrenal fatigue? The answer is that it depends on what kind of coffee you drink and how much.
If you tend to drink a couple cups of highly caffeinated coffee, then yeah, you might notice some side effects. However, the tricky thing about caffeine is that your morning cup probably contains more than you think it does.
In fact, a regular cup of your standard, home-brewed decaf has between 90 and 120 mg of caffeine in it. Meanwhile, a plain coffee from a chain coffee shop can contain upwards of 300 mg of caffeine.
With all of this caffeine, it’s no surprise that coffee might contribute to signs of exhaustion and dysregulation. Read on to learn more about how all of this works.
1. Influence on Stress Response
Every time you drink coffee, your body treats it like a mini stress event. Caffeine triggers your adrenal glands to release cortisol, mimicking the body's natural response to danger. In small doses, this is fine — it’s why coffee makes you feel alert and focused.
But when you’re constantly caffeinated, your body stays in a mild state of fight-or-flight. This can lead to higher baseline cortisol levels, increased anxiety, and, over time, adrenal burnout. Basically, too much coffee can keep your stress response stuck in overdrive, making you feel more frazzled even when there’s no real danger.
2. Cycle of Dependence
It starts with one cup to wake up. Then another to get through the morning. By 3 P.M., you’re crashing, so you reach for another. Sound familiar? This caffeine-fueled rollercoaster is a classic symptom of adrenal fatigue.
Since coffee temporarily spikes cortisol and energy, your body learns to expect it. The problem is that as your adrenals struggle to keep up, the caffeine high gets shorter, and the crashes get worse. Before you know it, you’re trapped in a cycle where coffee is the only thing keeping you functional — but it’s also part of what’s draining your energy in the first place.
3. Dehydration
Your adrenal glands need proper hydration to function, but caffeine isn’t exactly helping. Since coffee is a diuretic, it makes you lose fluids more quickly, which can leave your body — and your adrenal glands — parched.
When you’re dehydrated, your body perceives it as stress, triggering even more cortisol production. Over time, this constant strain can make adrenal fatigue worse.
If you’re relying on coffee to survive but skipping water, you might be putting your body in a never-ending stress cycle. A simple fix is matching every cup of coffee with a glass of water to keep your adrenals at rest.
How Can You Support Your Adrenal Glands While Drinking Coffee?
If you’ve identified with anything we’ve said up until now, then it may be time to hit a system reset for your body. Read on to learn how you can support your adrenal glands without going cold turkey on coffee.
Go Low-Caf
Cutting coffee entirely might sound like a crime against humanity, but you don’t have to go cold turkey to support your adrenal health. Try switching to a lower-caffeine option like matcha or half-caf blends.
If you just can’t bear to leave your beloved cup of joe behind, we don’t blame you — that’s why we made our Mushroom Coffee+. Every dose contains only 45 mg of caffeine, which is enough to help you feel focused but not enough to give you side effects.
Slowly reducing your caffeine intake can help your body reset its caffeine tolerance instead of relying on artificial stimulation. Plus, less caffeine means fewer jitters, fewer crashes, and better sleep — all of which can give your adrenal glands a much-needed break from overdrive.
Find Your Zen
Stress is one of the biggest culprits behind adrenal fatigue, so finding ways to chill out is crucial. Whether it’s meditation, deep breathing, yoga, or just laughing at cat videos, anything that calms your nervous system can help restore balance.
Chronic stress keeps your cortisol levels sky-high, but relaxation techniques signal to your body that it’s safe to take a breather. The more you train your body to relax without needing coffee as a crutch, the better your adrenals can recover.
Talk To a Doctor
If you feel like a zombie no matter how much coffee you drink, it’s worth checking in with a doctor. Adrenal fatigue symptoms can overlap with other conditions like thyroid disorders, anemia, or even burnout.
A healthcare professional can run tests, check hormone levels, and help rule out underlying issues. Even though "adrenal fatigue" isn't an official medical diagnosis, functional medicine practitioners often address its symptoms with lifestyle and dietary changes.
If you’re constantly exhausted, don’t just reach for another latte — get some real answers. Your body is trying to tell you something, and it’s time to listen.
Take Supplements That Support the Nervous System
Your nervous system needs the right nutrients to handle stress, and some supplements can help. Adaptogens like ashwagandha, Rhodiola, and holy basil are known for supporting adrenal function and balancing cortisol levels. Magnesium can help relax your nervous system, while B vitamins and vitamin C support energy production.
You might also want to try L-theanine, which can encourage a calm sense of focus without the caffeine crash. No need to look too hard for a new supplement — our mushroom coffee also contains L-theanine. Plus, it contains lion’s mane mushroom to support mental health and concentration, chaga mushroom to support the immune system, and collagen protein to encourage gut and skin health.
The Bottom Line
If you’re constantly running on caffeine but still feel exhausted, your adrenal glands might be waving a white flag. While coffee gives you a quick boost, too much can send your stress hormones into overdrive, leaving you even more drained.
Cutting back on caffeine, managing stress, and supporting your body with hydration and nutrients can help break the cycle. Don’t worry, though — you don’t have to quit coffee for good. Just swap your morning cuppa with some Everyday Dose and let the zen find you.
Sources:
Adrenal fatigue: What causes it? | Mayo Clinic
Caffeine content for coffee, tea, soda and more | Mayo Clinic
Coffees Serving Size Caffeine (mg) | Center for Science in the Public Interest
