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GidMK's profile
Health Nerd
Health Nerd
Health Nerd
Verified account
@GidMK

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Health NerdVerified account

@GidMK

Epidemiologist. Writer (Guardian, Observer etc). "Well known research trouble-maker". PhDing at @UoW Host of @senscipod Email gidmk.healthnerd@gmail.com he/him

Sydney, New South Wales
theguardian.com/profile/gideon…
Joined November 2015

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    1. Health Nerd‏Verified account @GidMK 18 Dec 2019

      So this is just...something else. Study: - observational - small(ish) - made no causal claims - measured metabolites, not coffee directly - small absolute risk decrease (~3%) - a bit meaningless Headlines:pic.twitter.com/fjOLl0itVU

      3 replies 2 retweets 27 likes
      Show this thread
      Health Nerd‏Verified account @GidMK 18 Dec 2019

      Study is here:https://onlinelibrary.wiley.com/doi/abs/10.1111/joim.13009 …

      5:49 PM - 18 Dec 2019
      1 reply 0 retweets 0 likes
        1. New conversation
        2. Health Nerd‏Verified account @GidMK 18 Dec 2019

          Basically, this was a case-control study, where researchers took a group of people with diabetes, another group without, and then looked back to see how much of different types of coffee they drankpic.twitter.com/8XUJoDK5dU

          1 reply 0 retweets 2 likes
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        3. Health Nerd‏Verified account @GidMK 18 Dec 2019

          This type of study is common for environmental risks - you take people who have a relatively rare issue, and see what exposures might have caused it

          1 reply 0 retweets 1 like
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        4. Health Nerd‏Verified account @GidMK 18 Dec 2019

          In this case, the researchers used two measures of how much coffee people drank: 1. asking them questions 2. metabolites of coffee in their blood

          1 reply 0 retweets 0 likes
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        5. Health Nerd‏Verified account @GidMK 18 Dec 2019

          They found two different things. For the self-reported coffee intake, there was no association between any coffee drinking and diabetes In other words, the opposite of the headlinespic.twitter.com/UxeswpjKDW

          1 reply 0 retweets 0 likes
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        6. Health Nerd‏Verified account @GidMK 18 Dec 2019

          For the metabolite analysis, there was a reduced risk of diabetes for those who had a lot of filtered coffee metabolites in their blood This equated to an odds ratio of 0.42, which is where we get the "60% reduced!" figure from

          1 reply 0 retweets 0 likes
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        7. Health Nerd‏Verified account @GidMK 18 Dec 2019

          But...metabolites aren't necessarily intake, especially since these metabolites were associated with coffee through a complex set of assumptions and statistical analyses

          1 reply 0 retweets 0 likes
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        8. Health Nerd‏Verified account @GidMK 18 Dec 2019

          So what did the study conclude? Well, have a read. Notice how it doesn't mention the wonders of filtered coffee AT ALL?pic.twitter.com/X4FS9POY8B

          1 reply 0 retweets 0 likes
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        9. Health Nerd‏Verified account @GidMK 18 Dec 2019

          So where did the headlines come from? Well, it appears that the senior author of the paper gave what I can only describe as an astonishing interview in the press release

          1 reply 0 retweets 1 like
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        10. Health Nerd‏Verified account @GidMK 18 Dec 2019

          Here's some quotes. Remember THIS PAPER DIDN'T LOOK AT WHETHER FILTERED COFFEE CAUSED REDUCED DIABETES RATESpic.twitter.com/HG7AzbOv9S

          1 reply 0 retweets 2 likes
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        11. Health Nerd‏Verified account @GidMK 18 Dec 2019

          The aim of the study appears to be mostly to use a new technique to investigate consumption, which is where the metabolites come from Everything to do with coffee reducing diabetes is basically complete nonsense

          1 reply 0 retweets 2 likes
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        12. Health Nerd‏Verified account @GidMK 18 Dec 2019

          The high filtered coffee drinkers - the people least likely to get diabetes - were better educated, younger, thinner, and smoked less than people who didn't drink filtered coffee It's a textbook case of "probably residual confounding"

          1 reply 0 retweets 3 likes
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        13. Health Nerd‏Verified account @GidMK 18 Dec 2019

          There are so many things that might've caused the association between filtered coffee and diabetes that simply weren't measured in this study! It's almost certain that it wasn't the coffee

          1 reply 0 retweets 2 likes
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        14. Health Nerd‏Verified account @GidMK 18 Dec 2019

          It is SO FRUSTRATING when academics are appropriately cautious in studies but then give absurd interviews with total overreach of their resultspic.twitter.com/lCH7zPQZ87

          1 reply 1 retweet 7 likes
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        15. Health Nerd‏Verified account @GidMK 18 Dec 2019

          Anyway, TL;DR: - vague association between filtered coffee and diabetes - probably not causal - drink your coffee however you want ☕️☕️☕️☕️

          0 replies 0 retweets 8 likes
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        16. End of conversation

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