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zetazzed 2 hours ago [-]
I'm a good target market for pro-coffee writing, but this is just an observational study of a drinks habit. No one in the general public should have any interest in studies of this kind.
Maybe if you're deep in working in this research space it could help generate hypotheses for more meaningful research? But "we cross sectionally compared two groups with different behaviors and found they were different" is not really a result.
al_borland 2 hours ago [-]
The endless articles about studies that are pro-coffee make me highly skeptical. They all feel like advertising by the coffee industry to help coffee addicts feel good about their habit instead of feeling like they should cut back.
designerarvid 2 hours ago [-]
Either point out weaknesses in the study, or dubious funding behind it etc. Or just stick with saying that you prefer tea.
pazimzadeh 2 hours ago [-]
it could be that coffee acts directly on the endocrine system as they suggest, or coffee allows you to work out longer (or work out at all since you don't want to sit still) which leads to the effects they observed
I'm curious why they don't mention tea actually, are they suggesting it's not the caffeine that's doing it?
granted recent studies showed decaf coffee has some benefits itself, so it could be some of the other compounds present in coffee, but a discussion of this would be useful
askvictor 58 minutes ago [-]
Decaf still has caffeine; about 30% of the original from the bean iirc.
Tea, as well as caffeine, has other compounds that are calming.
And yes, there are plenty of other compounds in coffee, as well as purely psychological effects.
ShinyLeftPad 2 hours ago [-]
Or links between the study and coffee industry
mc32 2 hours ago [-]
Or possibly one of those who stick to only water.
blinkbat 2 hours ago [-]
AmishNews
embedding-shape 2 hours ago [-]
> coffee addicts
I don't know if it's the word "addicts" that maybe doesn't have to be a negative, or if it's not the right word at all for "functional addicts", but I feel like the "addiction" people have to coffee is much more behavioral than chemical (although there is physiological withdrawal symptoms too), compared to other "harder" drugs like cocaine or heroin. The clear negative effects from long-term use is also a lot much evidence with one side of these, coffee not so much.
Not sure you have to cut back on something that you really enjoy, so much that you wanna do it every day, even if you get cranky when someone (sometimes you) ruin this ceremony for you. Why would you cut back when the biggest negative is spending 10-20EUR a month on some nice coffee you can consume every single morning?
co_ent 1 hours ago [-]
I've known people with disabling headaches until they hit 200mg+ of caffeine in the AM. They are caffeine addicts.
>you wanna do it every day, even if you get cranky when someone (sometimes you) ruin this ceremony for you
This is addicted behavior; the bar is far lower than most people use the word for.
dasyud 57 minutes ago [-]
My father's one of those people who get a headache unless they get their morning cup of tea. That is what deters me from caffeine.
Imustaskforhelp 20 minutes ago [-]
> Not sure you have to cut back on something that you really enjoy, so much that you wanna do it every day, even if you get cranky when someone (sometimes you) ruin this ceremony for you. Why would you cut back when the biggest negative is spending 10-20EUR a month on some nice coffee you can consume every single morning?
The only thing that I know is that I know nothing but I will like to respectfully present my points
Couldn't the same arguments that you used could be used, for say, phone addiction and so many other under-focused addictions as well.
There is more nuance to it that I'd like to explore:
Is the dependency of anything whether good or bad not something worth discussing more deeply into. Could it perhaps also say just a few things about our society that workers feel so overworked that they have to resort to using coffee in order to tolerate the amount of work?
I don't drink coffee personally, do I get cranky? Of course but I don't attribute that crankiness to my lack of coffee. Life has its ups and downs but suppose a down comes just after you wanted to quit coffee, you might attribute your responses to how you stopped drinking coffee, you would feel like coffee was helping you and now you stopped it and you are missing out on something. You must again use coffee!
My main point is: How much is coffee really helping you and how much is the fear of absence of coffee as if you are losing out on something so precious and that many can't live their life without it when in reality many people live just fine without drinking coffee as well and all the ways our minds folds our thinking into wanting it again. just one more time, trust me bro. Today I had a lot of work from my boss or I feel so stressed, nothing like a cup of coffee. Just one more time.
I feel as if the excuse can work in our minds because at that point, our minds are tired, it just wants to fix itself and we don't think too rationally about it. You might even think what's the harm? but the harms is that the cycle continues and I will try to list some of the harms in the end of the comment from another HN commenter (@bossyTeacher) who puts it better than I can :-)
- High heart rate and blood pressure
- Increased risk of arrhtymia
- Less deep sleep
- Disruption to your cortisol level dynamics
(I have shared some negative effects of it, also if coffee impacts your sleep, one has to wonder that there are people willing to pay thousands of dollars to improve their sleep, the question seems to me how much do you think your deep sleep is worth over the long term?)
As such, I believe that there's more nuance to the whole thing.
To me, my personal opinion is that I don't want my self control resource to focus on the task of coffee consumption and keeping it in check. I sometimes drink soft drinks like diet coke just because I would have some friction (which well online shopping is actually ironically* making it less when I would want the friction to be more actually but still!), I know that with coffee, I might not be able to resist the temptation of having coffee at home and then drinking it a bit too much. It happens to the best of us, It's alright but something worth thinking about.
Self control is like a resource in terms of how precious it is, you have a finite amount of self control (IMO). As such, I would like to just not think about coffee so much in life and live my life :-)
(I think I might prefer less diet coke as well and to get to lemonade and other natural drinks actually, personally I like lemonade as well but even the mere friction of 2 minutes making one has sometimes made me stop as I feel like its a task. I am thinking if I really must, someday I would try to make Lemonade in huge container and just drink from it throughout the day.)
brokencode 2 hours ago [-]
Why should they feel like cutting back? Where’s the evidence that it’s bad for you?
ifh-hn 1 hours ago [-]
I cut back because I found that I couldn't go a day without it without a massive headache.
Took me 2 weeks to stop craving coffee. And about a month until I started to feel right.
I still have the occasional coffee but don't drink it every day. I like it this way.
I miss it like I missed cigarettes after I quit those.
nomel 1 hours ago [-]
Is there a net benefit that you see, ignoring the fact that you're no longer dependent?
I've stopped a half dozen times, for around a month each time, but I found that I like the way my brain functions with coffee. The risk of a headache seems like a net win for me, in the grand scheme, especially since I try to do what I can to reduce the risk of dementia and Alzheimers.
ifh-hn 1 hours ago [-]
I suppose for me the net benefit is I can do without it. I don't like the feeling of being dependent on something.
I like that I can just get up and go do something without having to get a coffee to stave off a headache and be fully functional.
Like I say I'm not t-total I just have a different relationship with coffee now, one where I'm in control and I can use it rather than needing it.
1 hours ago [-]
al_borland 1 hours ago [-]
I constantly hear coffee drinkers say how much they drink with shame and that they should cut back. It's one of the most common things I hear when someone is talking about their coffee consumption.
Personally, I stopped drinking caffeine when I was around 19 after I figured out it was the source of my chronic headaches (from withdrawal). I had to talk my dad out of taking me to a neurologist at one point in high school. My quality of life went up significantly after cutting caffeine and going through the week-long headache.
brokencode 1 hours ago [-]
Shame due to what? Because they are suffering somehow or because they feel like it must be bad for them because they enjoy it?
al_borland 8 minutes ago [-]
I can’t speak for them, there are a variety of reasons they might lead to it. But I do see shame/regret being the emotion.
An example could be that they don’t like admitting how dependent they are on it to function. Reading between the lines, this is vibe I pick up most. Some others in the comments have stated this explicitly as true for them as well.
Imustaskforhelp 41 minutes ago [-]
Coffee (caffeine related products really) from my understanding seems to harshly impact deep sleep.
If you are asking in good faith (which I hope you do because its HN and we are curious people, aren't we!), I recommend looking at r/decaf for seeing people's experience that they are sharing regarding it.
Also upvoting @bossyTeacher comments and re-sharing the good points that they have made:
- High heart rate and blood pressure
- Increased risk of arrhtymia
- Less deep sleep
- Disruption to your cortisol level dynamics
bossyTeacher 1 hours ago [-]
It causes:
- High heart rate and blood pressure
- Increased risk of arrhtymia
- Less deep sleep
- Disruption to your cortisol level dynamics
Whether you consider all of them not "bad" or worth the benefits is up to you. People also consider moderate consumption of alcohol worth its benefits.
Everyone has a different risk profile. Know the risks and choose as you please.
KPGv2 2 hours ago [-]
I feel that way about the endless studies showing fiber is important for health, too. Because there's no way studies re-confirm findings because they're revealing truth. It's definitely Big Leaf at work.
throwaway27448 1 hours ago [-]
Addiction implies harm. What is the harm in coffee consumption?
bossyTeacher 1 hours ago [-]
Addiction implies dependence. If you feel unable to be a productive member of society without a psychoactive substance that you must ingest daily, then I have bad news for you.
scythe 1 hours ago [-]
The meat, tobacco, alcohol, etc industries would like very much to be able to do this but haven't with much larger budgets.
Caffeine causes increased locomotor activity. It's possible that the apparent benefits of coffee may occur because it causes drinkers to move around more (exercise). Other drugs also do this, but usually with more side-effects. Reductions in all-cause mortality associated with coffee consumption are broadly distributed across cardiovascular disease, cancer, which qualitatively resemble the benefits of exercise. Increased testosterone is also an effect of regular exercise:
High SHBG and lower free hormones isn't a good thing usually. Starving and anorexia (as an example) can make your SHBG levels skyrocket, resulting in low free hormone levels.
mawadev 24 minutes ago [-]
I have to say, initially coffee is good, but over time it chips away your sleep, your rest and then you kind of lose it. I have periods where I purposely decondition my body and brain from coffee just to reap the benefits again without all the longterm downsides. As always, it is about balance and moderation. I hope this helps you.
Weirdly, I cannot copy text from that page. What am I doing wrong?
Regardless, here is the result summary:
> Higher coffee intake groups showed lower total and visceral fat and higher skeletal muscle mass, while BMI was comparable across groups. Inverse correlations were observed between coffee intake and circulating branched-chain amino acids (BCAAs) in both sexes. In men, higher coffee intake correlated with a more favourable glucose-insulin profile. Multivariable-adjusted models revealed a distinct hormonal pattern: positive associations with total testosterone (β = +0.29 nmol/L per cup/day), bioavailable testosterone, and sex hormone-binding globulin (SHBG), alongside inverse associations with free testosterone and the free androgen index (FAI). In women, hormonal associations were more limited, with positive associations for SHBG and inverse associations for free testosterone and FAI.
This part: "positive associations with total testosterone (β = +0.29 nmol/L per cup/day)". For testosterone, 1 nmol/L ≈ 28.8 ng/dL. So: +0.29 nmol/L ≈ +8.4 ng/dL per additional cup/day.
Really, this will have no meaningful impact on your health. It is widely discussed by TRT (testosterone replacement therapy) doctors that supplements that can increase your total test by 100ng/dL will have no meaningful impact. Literally, you need to drink 12 cups of coffee per day to get a ~100ng/dL improvement. You are going to have a lot of second order effects from drinking 12 cups of coffee per day! I would never recommend it.
doubled112 1 hours ago [-]
I often drink a 12 cup pot in a day. No noticeable effects.
Why are coffee cups smaller than cups?
Maybe I’m just slow, but it makes doing the mental math a lot more difficult than it needs to be. Maybe I just need more coffee.
asdfasgasdgasdg 1 hours ago [-]
Love coffee, drink it every day. This study is just as useful as other studies that correlate coffee with negative outcomes. Which is to say, it’s a study that just shows some correlations. Causation is not particularly likely. Drink coffee if you like it but don’t expect health benefits or harms.
derektank 2 hours ago [-]
I wonder if the mechanism of action here is increased caffeine consumption resulting in more/longer duration/higher intensity exercise.
delduca 2 hours ago [-]
Only if it’s coffee from Brazil :-)
unselect5917 2 hours ago [-]
Something I learned years ago: caffeine doesn't directly "wake you up" it merely causes a trickle of adrenaline release.
So I'm guessing you could get the same boost from exercise, probably moreso.
Anything that elevates the heart rate for a bit is generally good for humans.
n8henrie 2 hours ago [-]
This is not the mechanism by which caffeine promotes wakefulness.
RobLach 2 hours ago [-]
That's totally wrong.
For one, caffeine is a known adenosine antagonist. The effects of adenosine is described as "drowsiness" or "relaxed".
u1hcw9nx 2 hours ago [-]
This was not a caffeine consumption study.
BrandoElFollito 1 hours ago [-]
I like coffee and drink about 5 to 7 Nespresso capsules a day. Except when I forget, or have no access to coffee.
I did not notice any change between these two extremes.
amelius 59 minutes ago [-]
I also drink a lot of coffee and I really hate it when I'm visiting a client and they offer me only 1 or 2 cups of coffee during the day!
raddan 10 minutes ago [-]
Perhaps this is the sign of a true addict but I would never travel someplace new without a backup supply of coffee. I always at least bring instant coffee; if it’s a longer trip I might bring a portable grinder and aeropress.
moojacob 2 hours ago [-]
Maybe because the other way to get Caffine is in drinks full of corn syrup.
nemomarx 2 hours ago [-]
You can get corn syrup free monsters everywhere. Or those 5 hour ones, or Celsius or whatever.
The reason to prefer coffee is that it tastes less aggressive than those I think
BeetleB 2 hours ago [-]
Coffee tastes more aggressive than all of those.
KPGv2 2 hours ago [-]
For people who are already addicted to sugar, yes, coffee tastes more aggressive than the drinks full of insane amounts of sugar or artificial sweeteners.
Meanwhile in Asia beans are considered sweet bc their food isn't overloaded with sugar.
BeetleB 1 hours ago [-]
It sounds like you're equating "aggressive" with "sweet".
Coffee has a very strong taste (even without sugar). Stronger than anything on the list. I'd wager that the reason some people add a lot of sugar is to make up for that strong taste.
5 hour energy drinks have almost no sugar. Much milder taste than coffee.
> Meanwhile in Asia beans are considered sweet bc their food isn't overloaded with sugar.
Red bean paste?
llm_nerd 2 hours ago [-]
The study links it to better metabolic health. Did you assume it meant worse?
bjt 2 hours ago [-]
I think they're saying that coffee is a healthier habit than soda.
KPGv2 2 hours ago [-]
Yes, my inference was "people consume caffeine, and if one group is getting it from coffee, the other group is getting it from non-coffee, mostly (highly-caloric) soda water, which explains why the coffee side looks healthier."
andai 2 hours ago [-]
Title sounds terrible, but the effects are positive from what I understood?
thih9 2 hours ago [-]
Not effects, just observations, as the article also states.
winningChild 2 hours ago [-]
[dead]
plastic-enjoyer 2 hours ago [-]
[flagged]
rzzzt 2 hours ago [-]
"Higher coffee consumption was linked to a more favourable glucose–insulin profile, higher concentrations of total and bioavailable testosterone, and increased levels of sex hormone-binding globulin (SHBG). At the same time, free testosterone and the free androgen index were modestly lower. In women, hormonal associations were more limited and were primarily characterised by higher SHBG and lower measures of free androgens."
- Total testosterone = free + bound to albumin + bound to SHBG
- Bioavailable testosterone = free + bound to albumin
- Free testosterone = free (not bound to any protein)
...aaaand now I got a mild headache. Is this good or bad? Is this why the title says "links" and not "promotes" or "inhibits" or any other word with a concrete negative or positive connotation?
thih9 2 hours ago [-]
Obligatory reminder about correlation != causation, as indicated in the article itself:
> However, as this was an observational study, the findings demonstrate associations rather than cause-and-effect relationships.
Maybe if you're deep in working in this research space it could help generate hypotheses for more meaningful research? But "we cross sectionally compared two groups with different behaviors and found they were different" is not really a result.
I'm curious why they don't mention tea actually, are they suggesting it's not the caffeine that's doing it?
granted recent studies showed decaf coffee has some benefits itself, so it could be some of the other compounds present in coffee, but a discussion of this would be useful
Tea, as well as caffeine, has other compounds that are calming.
And yes, there are plenty of other compounds in coffee, as well as purely psychological effects.
I don't know if it's the word "addicts" that maybe doesn't have to be a negative, or if it's not the right word at all for "functional addicts", but I feel like the "addiction" people have to coffee is much more behavioral than chemical (although there is physiological withdrawal symptoms too), compared to other "harder" drugs like cocaine or heroin. The clear negative effects from long-term use is also a lot much evidence with one side of these, coffee not so much.
Not sure you have to cut back on something that you really enjoy, so much that you wanna do it every day, even if you get cranky when someone (sometimes you) ruin this ceremony for you. Why would you cut back when the biggest negative is spending 10-20EUR a month on some nice coffee you can consume every single morning?
>you wanna do it every day, even if you get cranky when someone (sometimes you) ruin this ceremony for you
This is addicted behavior; the bar is far lower than most people use the word for.
The only thing that I know is that I know nothing but I will like to respectfully present my points
Couldn't the same arguments that you used could be used, for say, phone addiction and so many other under-focused addictions as well.
There is more nuance to it that I'd like to explore:
Is the dependency of anything whether good or bad not something worth discussing more deeply into. Could it perhaps also say just a few things about our society that workers feel so overworked that they have to resort to using coffee in order to tolerate the amount of work?
I don't drink coffee personally, do I get cranky? Of course but I don't attribute that crankiness to my lack of coffee. Life has its ups and downs but suppose a down comes just after you wanted to quit coffee, you might attribute your responses to how you stopped drinking coffee, you would feel like coffee was helping you and now you stopped it and you are missing out on something. You must again use coffee!
My main point is: How much is coffee really helping you and how much is the fear of absence of coffee as if you are losing out on something so precious and that many can't live their life without it when in reality many people live just fine without drinking coffee as well and all the ways our minds folds our thinking into wanting it again. just one more time, trust me bro. Today I had a lot of work from my boss or I feel so stressed, nothing like a cup of coffee. Just one more time.
I feel as if the excuse can work in our minds because at that point, our minds are tired, it just wants to fix itself and we don't think too rationally about it. You might even think what's the harm? but the harms is that the cycle continues and I will try to list some of the harms in the end of the comment from another HN commenter (@bossyTeacher) who puts it better than I can :-)
- High heart rate and blood pressure
- Increased risk of arrhtymia
- Less deep sleep
- Disruption to your cortisol level dynamics
(I have shared some negative effects of it, also if coffee impacts your sleep, one has to wonder that there are people willing to pay thousands of dollars to improve their sleep, the question seems to me how much do you think your deep sleep is worth over the long term?)
As such, I believe that there's more nuance to the whole thing.
To me, my personal opinion is that I don't want my self control resource to focus on the task of coffee consumption and keeping it in check. I sometimes drink soft drinks like diet coke just because I would have some friction (which well online shopping is actually ironically* making it less when I would want the friction to be more actually but still!), I know that with coffee, I might not be able to resist the temptation of having coffee at home and then drinking it a bit too much. It happens to the best of us, It's alright but something worth thinking about.
Self control is like a resource in terms of how precious it is, you have a finite amount of self control (IMO). As such, I would like to just not think about coffee so much in life and live my life :-)
(I think I might prefer less diet coke as well and to get to lemonade and other natural drinks actually, personally I like lemonade as well but even the mere friction of 2 minutes making one has sometimes made me stop as I feel like its a task. I am thinking if I really must, someday I would try to make Lemonade in huge container and just drink from it throughout the day.)
Took me 2 weeks to stop craving coffee. And about a month until I started to feel right.
I still have the occasional coffee but don't drink it every day. I like it this way.
I miss it like I missed cigarettes after I quit those.
I've stopped a half dozen times, for around a month each time, but I found that I like the way my brain functions with coffee. The risk of a headache seems like a net win for me, in the grand scheme, especially since I try to do what I can to reduce the risk of dementia and Alzheimers.
I like that I can just get up and go do something without having to get a coffee to stave off a headache and be fully functional.
Like I say I'm not t-total I just have a different relationship with coffee now, one where I'm in control and I can use it rather than needing it.
Personally, I stopped drinking caffeine when I was around 19 after I figured out it was the source of my chronic headaches (from withdrawal). I had to talk my dad out of taking me to a neurologist at one point in high school. My quality of life went up significantly after cutting caffeine and going through the week-long headache.
An example could be that they don’t like admitting how dependent they are on it to function. Reading between the lines, this is vibe I pick up most. Some others in the comments have stated this explicitly as true for them as well.
If you are asking in good faith (which I hope you do because its HN and we are curious people, aren't we!), I recommend looking at r/decaf for seeing people's experience that they are sharing regarding it.
Also upvoting @bossyTeacher comments and re-sharing the good points that they have made:
- High heart rate and blood pressure
- Increased risk of arrhtymia
- Less deep sleep
- Disruption to your cortisol level dynamics
- High heart rate and blood pressure
- Increased risk of arrhtymia
- Less deep sleep
- Disruption to your cortisol level dynamics
Whether you consider all of them not "bad" or worth the benefits is up to you. People also consider moderate consumption of alcohol worth its benefits.
Everyone has a different risk profile. Know the risks and choose as you please.
Caffeine causes increased locomotor activity. It's possible that the apparent benefits of coffee may occur because it causes drinkers to move around more (exercise). Other drugs also do this, but usually with more side-effects. Reductions in all-cause mortality associated with coffee consumption are broadly distributed across cardiovascular disease, cancer, which qualitatively resemble the benefits of exercise. Increased testosterone is also an effect of regular exercise:
https://journals.bioscientifica.com/ec/article/6/5/306/35211...
Weirdly, I cannot copy text from that page. What am I doing wrong?
Regardless, here is the result summary:
This part: "positive associations with total testosterone (β = +0.29 nmol/L per cup/day)". For testosterone, 1 nmol/L ≈ 28.8 ng/dL. So: +0.29 nmol/L ≈ +8.4 ng/dL per additional cup/day.Really, this will have no meaningful impact on your health. It is widely discussed by TRT (testosterone replacement therapy) doctors that supplements that can increase your total test by 100ng/dL will have no meaningful impact. Literally, you need to drink 12 cups of coffee per day to get a ~100ng/dL improvement. You are going to have a lot of second order effects from drinking 12 cups of coffee per day! I would never recommend it.
Why are coffee cups smaller than cups?
Maybe I’m just slow, but it makes doing the mental math a lot more difficult than it needs to be. Maybe I just need more coffee.
So I'm guessing you could get the same boost from exercise, probably moreso.
Anything that elevates the heart rate for a bit is generally good for humans.
For one, caffeine is a known adenosine antagonist. The effects of adenosine is described as "drowsiness" or "relaxed".
I did not notice any change between these two extremes.
The reason to prefer coffee is that it tastes less aggressive than those I think
Meanwhile in Asia beans are considered sweet bc their food isn't overloaded with sugar.
Coffee has a very strong taste (even without sugar). Stronger than anything on the list. I'd wager that the reason some people add a lot of sugar is to make up for that strong taste.
5 hour energy drinks have almost no sugar. Much milder taste than coffee.
> Meanwhile in Asia beans are considered sweet bc their food isn't overloaded with sugar.
Red bean paste?
- Total testosterone = free + bound to albumin + bound to SHBG
- Bioavailable testosterone = free + bound to albumin
- Free testosterone = free (not bound to any protein)
...aaaand now I got a mild headache. Is this good or bad? Is this why the title says "links" and not "promotes" or "inhibits" or any other word with a concrete negative or positive connotation?
> However, as this was an observational study, the findings demonstrate associations rather than cause-and-effect relationships.
More: https://en.wikipedia.org/wiki/Correlation_does_not_imply_cau...