this post was submitted on 02 Jul 2023
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I mean, dry instant coffee is concentrated, but the "end product" with water really shouldn't be any more than regular coffee.
But it's funny that they say "No causal relationship was found between filtered coffee intake and telomere length" when "coffee intake and instant coffee intake were negatively correlated with telomere length, which was equal to 0.12 year of age-related decrease in telomere length for each additional cup of coffee intake", which I took to mean that yes even "regular" coffee affects telomere length
They did a bad job of explaining their definitions for groupings, but I gathered that filtered/instant came from questionnaires where participants had to self report how much and which of those two types of coffee the participant had consumed the previous day, where as the generic/regular 'coffee' was a different survey for consumption of any coffee of any/either type (and including decaf).
Ah right, silly me, I skipped the "Study population" section and went straight to the results