Caffeine & Anxiety: A Complicated Relationship

Caffeine & Anxiety: A Complicated Relationship

Look. I love coffee. But here's what I've learned about the connection. You don't have to quit. Just... notice.

I love coffee.

I love the smell of it. The ritual of making it. The first sip in the morning when the house is quiet and the day hasn't started yet and for a brief, shining moment, everything feels possible. I love the warmth of the mug in my hands. I love the tiny lift it gives me—the sense that I might, just possibly, be a functional human being.

Coffee has been my loyal companion for decades. Through early mornings with small children. Through late nights finishing work. Through the general wear and tear of being alive.

And coffee has also, I'm fairly certain, made my anxiety significantly worse.

This is not a post about quitting caffeine. I'm not going to tell you to give up the one thing that makes mornings bearable. I'm not a monster. This is a post about noticing. About understanding the connection. About making informed choices rather than just mainlining espresso and wondering why you feel like you're vibrating slightly out of your body.

Let's get into it.

What Caffeine Actually Does to Your Body

Caffeine is a stimulant. It works by blocking adenosine, a neurotransmitter that builds up during the day and makes you feel sleepy. When adenosine is blocked, you feel alert. Awake. Ready to go.

But caffeine also triggers the release of adrenaline. That's the same hormone your body releases when you're facing a sabre-toothed tiger. Or a stressful email. Or a full-blown panic attack.

So when you drink coffee, you're essentially giving your nervous system a little nudge towards "alert." And if your nervous system is already primed—already scanning for threats, already on edge—that little nudge can become a shove.

Caffeine can:

• Increase heart rate
• Cause jitteriness or trembling
• Trigger or worsen feelings of anxiety
• Interfere with sleep (even if you fall asleep fine, it reduces deep sleep quality)
• Irritate the gut (remember the gut-brain axis from the last post?)

Sound familiar? It should. These are also symptoms of anxiety. Caffeine doesn't cause anxiety, but it can mimic it, amplify it, and make it much harder to tell what's a real threat and what's just... coffee.

Why This Matters for Anxious Brains

Here's the thing I've learned, slowly and reluctantly, over years of trial and error: my baseline anxiety is lower when I drink less caffeine.

Not zero. Not cured. Just... lower. The volume knob gets turned down a few notches. The 3am racing thoughts are less frequent. The physical jitters that I used to attribute to "just being an anxious person" are less intense.

This doesn't mean caffeine is bad. It means my particular nervous system—sensitive, easily startled, prone to false alarms—doesn't handle it well in large quantities. Your nervous system might be different. Some people can drink a double espresso at 9pm and sleep like a baby. (I hate those people. Not really. Sort of.)

But if you're reading this, chances are your nervous system is more like mine. Sensitive. A bit dramatic. Quick to sound the alarm.

The Experiment (No Quitting Required)

I'm not going to tell you to give up coffee. But I am going to suggest an experiment. Just a week. Just to see.

Week 1: Track What You're Doing Now
Write down:

• How much caffeine you have each day (coffee, tea, energy drinks, cola, even chocolate)
• What time you have it
• How you feel physically and emotionally throughout the day
• How you sleep

Don't change anything. Just notice.

Week 2: Make One Small Change
Pick one of these. Just one.

• Switch to decaf after midday. Caffeine has a half-life of about 5-6 hours. That means if you have a coffee at 3pm, half of it is still in your system at 8 or 9pm. Switching to decaf after lunch reduces the sleep disruption without changing your morning ritual.
• Reduce by one cup. If you normally have three coffees, try two. Replace the third with herbal tea, rooibos, or just hot water.
• Try half-caf. Mix decaf and regular beans. You still get the ritual and some of the lift, but less of the jolt.
• Wait 90 minutes after waking. Your body naturally produces cortisol in the morning to help you wake up. Drinking coffee immediately can spike cortisol further. Waiting 60-90 minutes lets your natural rhythm do its job first.

Week 3: Compare
Look back at your notes. Did anything change? Sleep? Anxiety levels? That jittery feeling at 4pm? The 3am waking?

You might notice nothing. That's fine. Go back to your coffee and enjoy it. You might notice a small but meaningful difference. That's also fine. You get to decide what to do with that information.

What I Do Now (Mostly)

After years of this push-pull relationship with caffeine, here's where I've landed. It's not perfect. It's not rigid. But it works for me.

• One proper coffee in the morning. Usually around 9 or 10am, after I've been awake for a bit. I savour it. It's a ritual, not a fuel stop.
• Decaf after midday. Sometimes I forget. Sometimes I have a second coffee because I want one. But mostly, I stick to this.
• No caffeine after 3pm. This one's firm. If I have caffeine late in the day, I will lie awake at 2am replaying conversations from 2007. It's just not worth it.
• Herbal tea in the evening. Peppermint. Chamomile. Rooibos. Something warm and soothing that doesn't mess with my sleep.
• More water. Dehydration mimics anxiety symptoms. Keeping hydrated helps me distinguish "actual anxiety" from "I just need a drink of water."

What About Tea?

Tea contains caffeine, but less than coffee. A typical cup of black tea has about half the caffeine of a cup of coffee. Green tea has even less. And both contain L-theanine, an amino acid that promotes calm and focus. For some people, tea feels less jittery and more steady than coffee.

If you're a tea drinker, you might not need to change anything. Or you might still benefit from switching to herbal after midday. Experiment. Notice.

A Note on Energy Drinks and Pre-Workout

I'm going to be honest: if you have anxiety and you're drinking energy drinks or taking pre-workout supplements, you're probably making things harder for yourself. These products often contain massive amounts of caffeine plus other stimulants. They're designed to make you feel wired. If your nervous system is already prone to false alarms, this is like setting off a firework in a library.

You don't have to quit everything forever. But maybe... less? Or none? Just to see?

The Emotional Bit

Here's the thing I struggle with. Coffee isn't just caffeine. It's comfort. It's ritual. It's "I'm an adult and I get to have this thing that makes me feel good." It's wrapped up in identity and habit and the small pleasures that make life bearable.

Giving it up—or even reducing it—can feel like losing a friend. A warm, reliable, slightly jittery friend.

So I'm not telling you to give it up. I'm telling you to pay attention. To notice the connection. To make choices from a place of awareness rather than automatic habit.

If you decide that the comfort of your morning coffee outweighs the slight increase in baseline anxiety—that's a valid choice. It's your body. Your nervous system. Your life.

Just know that the connection exists. And if you ever want to experiment with turning the volume down, caffeine is one of the dials you can adjust.

A Final Thing

I still love coffee. I probably always will. But I love not lying awake at 3am with my heart pounding more.

It's a trade-off. And I get to decide, day by day, cup by cup, what's worth it.

You do too.

Anxiously Ever After is written by me, Jennie, a 50-something-year-old woman who has one very good coffee every morning and feels slightly conflicted about it every single time.