PODCAST TRANSCRIPT
Summary
This audio excerpt introduces a critical perspective on daily caffeine consumption, based on an article analyzing a study on its effects. The speaker highlights the common reliance on caffeine for a performance boost, but then pivots to question whether this is truly a sustained benefit. The core of the discussion revolves around a study that found diminished performance enhancement from caffeine in individuals who consumed it daily for eight weeks, a reduction that vanished after a one-week caffeine washout period. This leads to the central theme: the author of the article proposes that this reduced effect is not merely tolerance, but potentially a sign of "accumulated damage" or stress on the body's hormonal systems from repeated stimulation, suggesting our understanding of daily caffeine's impact may be fundamentally flawed.
Welcome back. If you're looking to get smart fast on stuff that actually matters, you're in the right place.
Today, uh we're digging into caffeine. Most of us have it daily, right? That morning coffee, maybe an energy drink later.
Yeah, it's everywhere.
But what if the way we think about how it affects us, you know, day in day out is well, maybe backwards.
That's exactly what we're exploring. We looked at this article, the accumulated damage from daily caffeine use,
right,
by Joah Kim Bartl. It came out in April20. five and it dives into a randomized control trial uh which was also summarized over onexam.com.
Okay.
And it really questions this whole idea that your daily caffeine fix is just this reliable performance boost.
So the big question is is it a sustained boost or is something else going on especially when you use it all the time. This author seems to think our common understanding is totally off.
He really does. He starts off strong calling caffeine and things like it.
Yeah.
Well, he calls them misunderstood poisons.
Wow. Okay. Poison. even in nutrition and sports science. That's bold.
It's definitely provocative. But he argues it's based on just, you know, simple biochemistry and physiology. He thinks we've kind of gotten tangled up in some not quite right ideas about how our bodies actually handle this stuff day after day, especially this idea of just building tolerance,
right? The idea that you just get used to it. Yeah.
So, let's talk about the study this is all based on. Can you uh walk us through how they set that up?
Sure. So, they took 73 male college students.
These guys didn't usually have much caffeine, like less than 25 milligrams a day, which is really low.
Okay. So, not regular coffee drinkers.
Exactly. And for eight weeks, they split them up. Half got a daily caffeine supplement.
How much?
It was 3 milligrams per kilogram of body weight. So, for say 75 kilo guy, that's around 225 milligrams a day,
right? Like a strong coffee or maybe a couple of sodas, something like that.
Yeah. A decent daily dose. The other half just got a placebo.
Okay. Eight weeks of either caffeine or nothing. Then what?
After the eight weeks, they tested everyone's performance. They did a 3 kilometer run and something called a windgate test.
What's that?
It's basically this super intense like 30 second allout cycling test. Measures anorobic power and capacity. Real leg burner.
Gotcha. Intense burst.
Right. And here's the key part. They did these tests twice. Once after taking caffeine and once after taking a placebo. Ah, so they could compare the effect within each person.
Precisely. Then after those tests, everyone went on a placebo for a full week, like a wash out period
to get any lingering caffeine out of their system.
Exactly. A clean slate for everyone. And then they did the running and winggate tests again, one last time, either with caffeine or with a placebo.
Okay. So, initial phase tests, wash out week, then tests again. Seems pretty thorough. So, what did they actually find? This is where it gets interesting, you said.
Yeah. This is the core finding. Overall, C Caffeine did boost performance. No huge surprise there, right?
But, and this is the big butt, the performance boost from caffeine was noticeably smaller in the group that had been taking caffeine every single day for those 8 weeks.
Huh. So, the guys who were used to it got less of a kick from it during the test.
Exactly. But wait, there's more. In those final tests, after the oneweek wash out period,
Yeah.
the performance-enhancing effect of caffeine was basically the same for both groups. It didn't matter if they've been on caffeine. or placebo for the previous 8 weeks.
Whoa. Okay, so let me get this straight. Daily caffeine for 2 months meant less of a boost during that time, but just one week off and they responded to caffeine just like the people who hadn't had it regularly.
You got it.
That really cuts against the idea that you just build this long-term tolerance, doesn't it? Like if it was pure tolerance, you'd expect them to still need more after just a week off.
It absolutely does. And that's the author's jumping off point. He really pushes back against that standard habitual adaptation or tolerance explanation.
He thinks it's not just your body going me more caffeine, whatever.
No, he argues that the smaller effect isn't your body simply getting used to it.
Okay. So, if it's not tolerance, what is it according to him? He used that strong word earlier, poisoning.
Yeah. His perspective is well, it's pretty different. He frames daily caffeine intake as a kind of low-level acute poisoning.
Acute poisoning like every day.
That's his term. He argues it constantly triggers the body's fightor-flight response, you know, that adrenaline surge, increased heart rate,
the stress response.
Exactly. And his theory isn't that the body just adapts and gets used to this daily nudge. Instead, he suggests the glands that manage this response, the endocrine glands,
the ones releasing adrenaline, cortisol, that kind of stuff,
right? Epinephrine, norepinephrine, cortisol. He believes they get overworked and potentially over time even damaged from this constant lowgrade stimulation. So, it's like instead of the brain ignoring the caffeine signal, the machinery producing the response gets worn out, like flooring the gas pedal constantly eventually damages the engine.
That's a really good way to put it. That's the core of his argument. This ongoing stress, this potential wear and tear on the hormonal system. That's why the response diminishes, not because of simple tolerance. The body just struggles to keep up that level of output.
H that's a very different picture. And he also mentioned that how bad this effect is can vary a lot between people, right?
Yes, definitely. He stresses that It's not the same for everyone. It depends on a few things.
Like what?
Well, one is your overall toxic load, basically. All the other stuff your body's dealing with from, you know, diet, environment, whatever.
Another is just your general daily stress level even without caffeine.
Makes sense.
And then, um, he brings in nutrition pretty strongly. He specifically argues, and this is quite a specific view, that an animal-based diet is way better for helping the body detox and heal compared to Well, he calls other diets inappropriate plant-based or processed crap.
Okay. Yeah, that's a very particular stance on diet, but I see how it fits his overall idea about the body needing the right resources to cope with stressors like caffeine,
right? It's all part of his model of how resilient the body is or isn't.
So, what's his concern about the long run? If people are doing this daily, maybe with higher doses from energy drinks or pre-workouts, what's the potential damage he's worried about?
He expresses real concern about uh potential long-term internal damage, years and years of hitting those endocrine systems hard, especially with those bigger doses you find in pills, energy drinks, pre-workouts. He suggests it could really lead to chronic health issues down the line.
And this feeds into what he described as a kind of catch 22, right? The low energy cycle.
Exactly. Yeah. The catch 22 of low energy.
His argument is that a lot of people start using caffeine because they already feel tired and run down
often due to maybe poor diet or sleep or other habits,
right? So, just grab caffeine for that quick fix, that temporary energy lift.
Mhm.
But according to his theory, that very caffeine, while giving the short-term boost, is also adding to the underlying problem, adding more stress, potentially causing more of that damage we talked about,
making them even more reliant on it just to feel normal.
Precisely. It becomes this cycle where you need it more and more just to function because the underlying energy levels might actually be getting worse. He flat out calls it an addiction.
So, you're basically using the thing that might be contributing to the problem to try and solve the symptom. Like, yeah, bailing out a leaky boat with a civ.
That's a perfect analogy for how he frames it.
Okay, so if that's the problem he outlines, what's his proposed fix? How does he suggest people break out of this cycle? His solution sounds like it might be pretty extreme.
It is quite radical. Yeah, it aligns very closely with his strong views on diet and physiology. Step one, he says, cut out caffeine completely.
Cold turkey.
Seems like it. And along with caffeine, he recommends eliminating again anything plant-based and processed.
Wow. Okay. So, cut out caffeine and basically adopt a very specific diet.
Yes. Specifically, what he calls a species appropriate animal-based diet.
Yeah.
The idea is this provides the raw materials the body needs to heal itself.
And then
he even suggests considering a fast like a 3 to 5 day fast,
water,
possibly even a dry fast. So, restricting water too for at least part of it.
He believes this helps minimize withdrawal symptoms and really accelerates detoxification.
A dry fast. That's intense.
It is. And then after the fast, the recommendation is to stick firmly to that animal-based diet moving forward.
Yeah. That's a world away from just, you know, switching to half calf and eating more veggies.
Absolutely. It's a complete system reset based on his understanding of what causes the problem and what the body needs to recover its natural energy balance.
Okay. So, wrapping up this deep dive into Bartl's article in that study, what's the main takeaway? The thing listen ers should really mull over.
I I think the core idea, the really provocative one is that feeling like you need more caffeine for the same effect. It might not just be tolerance,
right?
This source is suggesting it could actually be a sign of something else like accumulated stress on your system, maybe even a degree of physiological harm.
It really flips the script, doesn't it? Instead of my body adapted, it might be my body is struggling.
Exactly. It makes you question that immediate buzz and think about, well, what are the potential unseen costs of relying on it every single day.
So for everyone listening, maybe think about your own caffeine habit. Have you noticed that diminishing return? Does this idea of accumulated stress kind of resonate or does it feel totally off? It's definitely something to chew on.
And it leads to that final thought really. Could our daily pickme up, the thing we count on for energy, actually be digging us into a deeper energy hole long term? A physiological debt we're not even aware we're racking up?
Definitely encourages you to maybe explore this perspective more and consider what it might mean for your own health and energy.