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Re:Regular caffeine consumption affects brain structure by account-5 on Sunday June 12, 2022 @04:24AM (#31712748)
First they only tested 20 people, which is pretty low. And they don't seem to have tested anyone who wasn't previously a caffeine consumer. To be fair they conclude more study needs done.
Re:Regular caffeine consumption affects brain structure by BLKNSLVR on Sunday June 12, 2022 @06:46AM (#31713509)
Genius!

A "gateway" study to justify a larger, more scientifically thorough, and therefore much more expensive, study in which grant money is necessarily spent on lots of coffee!

Re:Regular caffeine consumption affects brain structure by WJW on Sunday June 12, 2022 @06:56AM (#31713551)
Every study ever conducted ends with the recommendation that "more research is needed". Granted, not all studies are as self-evidently important as caffeine research :)
Re:Regular caffeine consumption affects brain structure by DryLabRebel on Monday June 13, 2022 @06:31PM (#31732592)
20 people is very low, presumably becuase the goal of the study was sleep effects, and they were using sleep labs, so I'd say that budget was a big issue here.

No doubt they wanted to maximise sample size, which is why they used the same 20 individuals for both the test and control groups.