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Caffeinated and decaffeinated coffee lower stress, depression and impulsivity

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Re: Caffeinated and decaffeinated coffee lower stress, depression and impulsivity

#2
Hmm is this about caffeine's effect or about going back to caffeine after abstaining from it?

And is the effect chemical, or there's also something about the ritual?

Has anyone compared groups that either drank coffee or took the same quantity in pills?

Re: Caffeinated and decaffeinated coffee lower stress, depression and impulsivity

#4
post #2

Hmm is this about caffeine's effect or about going back to caffeine after abstaining from it? And is the effect chemical, or there's also something about the ritual? Has anyone compared groups that either drank coffee or took the same quantity in pills?

Well according to the abstract it related to gut health affects of the coffee not the caffeine itself.

> "Our findings reveal the microbiome and neurological responses to coffee, as well as their potential long-term benefits for a healthier microbiome. Coffee may modify what microbes do collectively, and what metabolites they use. As the public continues to think about dietary changes for the right digestive balance, coffee has the potential to also be harnessed as a further intervention as part of a healthy balanced diet."

That would explain why it works for decaf too. i.e. it's healthy gut, healthy mind.

Re: Caffeinated and decaffeinated coffee lower stress, depression and impulsivity

#5

> Participants first abstained from coffee for two weeks before being reintroduced to either caffeinated or decaffeinated coffee in a blinded trial. So it could easily just be cessation of withdrawal symptoms.

Only if they hadn't also tested decaf. There's clearly another factor at play.

Re: Caffeinated and decaffeinated coffee lower stress, depression and impulsivity

#6

> Participants first abstained from coffee for two weeks before being reintroduced to either caffeinated or decaffeinated coffee in a blinded trial. So it could easily just be cessation of withdrawal symptoms.

The sentence immediately before the one you quoted notes that there was a group of non-coffee drinkers in the study, and the sentence immediately after states that both groups experienced the positive effects.

Re: Caffeinated and decaffeinated coffee lower stress, depression and impulsivity

#8
post #4
post #2

Hmm is this about caffeine's effect or about going back to caffeine after abstaining from it? And is the effect chemical, or there's also something about the ritual? Has anyone compared groups that either drank coffee or took the same quantity in pills?

Well according to the abstract it related to gut health affects of the coffee not the caffeine itself. > "Our findings reveal the microbiome and neurological responses to coffee, as well as their potential long-term benefits for a healthier microbiome. Coffee may modify what microbes do collectively, and what metabolites they use. As the public continues to think about dietary changes for the right digestive balance,…

I did some searching as well. This (unrelated to today's article) seems to say the ritual does more than just ingesting the substance:

https://www.medicalnewstoday.com/articles/drinking-morning-c...

Re: Caffeinated and decaffeinated coffee lower stress, depression and impulsivity

#9
Note that as the trial is described, the blinding was only related to the presence or not of caffeine. There wasn't any "non-coffee" placebo (something with the taste but none of the components of coffee). (Of course it is certainly difficult to make something taste like coffee while being as neutral as water. I don't even think it is possible.)

As such, the improvement seen when they start drinking coffee could simply be a placebo effect. Coffee making is a nice daily ritual that helps being grounded in the present, as do sents, tastes and the feeling of a warm beverage.

The study is also fairly low power, as you have 62 people in four groups: coffee drinker with caffeine, coffee drinker with decaffeinated, non-coffee drinker with caffeine, non-coffee drinker with decaffeinated.

(Again, a big problem in many human studies is that it is very hard to recruit enough people, both for financial and organization reasons, so don't read this as a knock against the research team).

Re: Caffeinated and decaffeinated coffee lower stress, depression and impulsivity

#10
post #6

> Participants first abstained from coffee for two weeks before being reintroduced to either caffeinated or decaffeinated coffee in a blinded trial. So it could easily just be cessation of withdrawal symptoms.

The sentence immediately before the one you quoted notes that there was a group of non-coffee drinkers in the study, and the sentence immediately after states that both groups experienced the positive effects.

Yes, that's how stimulants work. The first hit, after abstinence, is always the best.
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