What I Learned From a Year of Drinking Only Decaf (and Why I'd Recommend It)
Last January I switched to decaf only. No regular coffee, no regular black tea, no matcha. Just decaf coffee, herbal tea, and a daily cup of green tea that I knew contained some caffeine but not enough to worry about.
I did this for a year. I'm back to regular coffee now, but the experiment changed how I think about caffeine, sleep, and what I actually want from my morning cup.
This post is the honest version. What changed, what didn't, what surprised me, and what I'd recommend if you're considering trying it yourself.
A note before I get into it: we still don't sell decaf commercially, for the reasons in our why we don't sell decaf post. The business math doesn't work at our scale. I bought decaf from other roasters during the experiment — I'm not asking you to buy it from us. I'm sharing what the experiment taught me.
Why I tried it
Two reasons, both honest:
Sleep. I'd been sleeping poorly for about six months. The pattern: wake up at 2–3 a.m., stay awake for 30–60 minutes, fall back asleep, wake up tired. It wasn't every night, but it was most nights. I'd tried the obvious things — no screens before bed, cooler bedroom, consistent wake time — and none of them moved the needle.
Anxiety. I'd also noticed that my afternoon energy was paired with a low-grade anxiety that I hadn't had a few years earlier. The kind of feeling where your chest is slightly tight, your thoughts move faster than you want them to, and you can't quite settle. It wasn't constant, but it was there most afternoons.
I wasn't ready to give up coffee entirely. I love the ritual, the flavor, the warmth of it. But I was willing to try decaf-only for a few weeks to see if the sleep and anxiety issues would resolve.
I told myself I'd do it for a month. The month became two months. The two months became six. The six months became a year. The pattern held, the symptoms improved, and by month six I wasn't in a rush to switch back.
What changed
The headline results, in order of how much they mattered:
Sleep. The biggest change. The 2–3 a.m. wake-ups dropped from most nights to occasional. When they did happen, I fell back asleep faster. I woke up feeling more rested on most mornings. The effect was noticeable within two weeks and consistent across the year.
Anxiety. Also a big change. The afternoon tightness and fast thoughts reduced significantly. By month three, the afternoon anxiety was mostly gone. It came back mildly when I traveled and drank regular coffee for a few days, then subsided when I returned to decaf.
Energy. This surprised me. I expected to feel less energetic on decaf. I did feel less energetic for the first two weeks — the withdrawal from regular caffeine produced headaches, fatigue, and brain fog. By week three, the energy levels returned to roughly what they were on regular coffee. The pattern was: caffeine gives you a quick boost and a slower crash, decaf gives you a flatter, more consistent energy level throughout the day. I didn't have the morning spike, but I also didn't have the afternoon dip.
Headaches. I get occasional caffeine-withdrawal headaches on weekends when I drink less coffee than usual. Those went away entirely on decaf. The first two weeks of decaf included some withdrawal headaches (the body's adjustment), but after that, no headaches.
Focus. Slightly worse for the first hour of the morning (no caffeine spike to jump-start focus), but more consistent across the afternoon. The pattern was: slower start, steadier middle.
Flavor. Decaf is not as flavorful as regular coffee. This is honest. The Swiss Water Process decaf I bought was good, but it wasn't as complex as the regular specialty coffee I usually drink. The body was slightly thinner, the aromatics slightly muted, the finish slightly shorter. I learned to appreciate it for what it was — a competent, mild cup — without expecting it to compete with my favorite regular coffees.
What didn't change
Some things I expected to change but didn't:
Stomach issues. I get occasional acid reflux from coffee. It didn't change on decaf. The acid in coffee is unrelated to the caffeine, so removing caffeine doesn't help if your issue is acid-related.
Skin. Some people claim caffeine makes their skin worse. I didn't notice any difference.
Appetite. Coffee suppresses my appetite slightly in the morning. Decaf did the same thing, so I assume the effect was caffeine-independent (possibly related to the warmth or the ritual).
The decaf quality problem
This is the part that I expected but didn't fully appreciate until I lived with it for a year.
Most decaf is worse than most regular coffee.
The decaffeination process strips some flavor along with the caffeine. No matter how good the decaf method is (Swiss Water, CO2, sugarcane EA), the green bean loses some aromatic compounds in the process. The roaster has to work harder to bring out the remaining flavors, and the resulting cup is usually 80–90% as flavorful as the regular version — never quite 100%.
This means that a year of decaf-only is, in practice, a year of drinking slightly less interesting coffee than you could be drinking. If you're a coffee enthusiast, that's a real tradeoff. I made peace with it because the sleep and anxiety benefits were worth it. But if those benefits weren't there for me, the quality loss would have been a deal-breaker.
For most people, I suspect the decaf quality gap is smaller than this — most people don't taste the subtle flavor loss I'd notice. But for someone who's used to drinking really good coffee, decaf is a step down in flavor.
What I'd recommend
If you're considering a decaf-only period, here's what I'd say:
Try it for 30 days first. The withdrawal headaches and fatigue of the first two weeks are real, and they go away. After 30 days, you'll know whether the sleep and anxiety benefits are real for you. If they're not, you've lost a month. If they are, you have a clear answer.
Buy good decaf. Don't buy the cheapest decaf you can find — the flavor gap will be bigger, and you'll hate the experiment. Look for Swiss Water Process decaf from a roaster you'd otherwise trust. The price will be higher than cheap decaf but lower than premium regular coffee.
Give it at least 90 days before deciding. The first month includes withdrawal. The second month is when the body adjusts. By month three, you're past the acute phase and into the chronic pattern. That's when the signal is real.
Track what you're measuring. I tracked sleep quality (wake-ups per night, how rested I felt in the morning) and anxiety (afternoon tightness on a 1–10 scale) in a notebook. Without tracking, the changes were subtle enough that I might have talked myself out of the experiment.
Know that you'll go back. At some point, if you're like me, you'll want a really good cup of regular coffee. The benefits of decaf are real but they're not life-changing. You can do decaf for a defined period, get the benefits, and return to regular coffee when you're ready.
Why we still don't sell decaf
Even after a year of drinking it personally, we still don't sell decaf commercially. The reasons are the same as in our why we don't sell decaf post:
- The cost is 30–50% higher than regular coffee, all else equal.
- The minimum batch size for our roaster is bigger than the demand would support.
- The freshness story is harder to maintain with a low-turnover SKU.
I'm glad I drank it for a year. I'm glad I have the experience. I'm still glad we don't sell it commercially, because the math doesn't work at our scale.
If you want to try decaf, buy from a roaster who's doing it at the right scale. Don't ask a small roaster to take on a SKU they can't turn over. Find someone who's built for it.
The takeaway
A year of decaf taught me three things:
- Caffeine was affecting my sleep and anxiety more than I realized. The change was noticeable within weeks and consistent across the year.
- Decaf is good, not great. The quality gap is real but not catastrophic. For most people, the cup is competent.
- The benefits are reversible. When I went back to regular coffee after the year, the sleep and anxiety issues returned within a few weeks. The experiment was reversible, which meant I hadn't committed to anything permanently.
I'd recommend a 30-day trial to anyone who suspects caffeine is affecting their sleep or anxiety. The investment is small. The signal is clear. You can always go back.
Brew slow. Sip slow. Try it for a month.
If you're thinking about cutting back on caffeine but don't want to give up coffee entirely, our why we don't drink coffee past noon post covers a middle path. For the broader caffeine biology, our how caffeine tolerance actually works post explains why the effects feel the way they do.