Skip to content
By using Twitter’s services you agree to our Cookies Use. We and our partners operate globally and use cookies, including for analytics, personalisation, and ads.
  • Home Home Home, current page.
  • About

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @
  • Language: English
    • Bahasa Indonesia
    • Bahasa Melayu
    • Català
    • Čeština
    • Dansk
    • Deutsch
    • English UK
    • Español
    • Filipino
    • Français
    • Hrvatski
    • Italiano
    • Magyar
    • Nederlands
    • Norsk
    • Polski
    • Português
    • Română
    • Slovenčina
    • Suomi
    • Svenska
    • Tiếng Việt
    • Türkçe
    • Ελληνικά
    • Български език
    • Русский
    • Српски
    • Українська мова
    • עִבְרִית
    • العربية
    • فارسی
    • मराठी
    • हिन्दी
    • বাংলা
    • ગુજરાતી
    • தமிழ்
    • ಕನ್ನಡ
    • ภาษาไทย
    • 한국어
    • 日本語
    • 简体中文
    • 繁體中文
  • Have an account? Log in
    Have an account?
    · Forgot password?

    New to Twitter?
    Sign up
GidMK's profile
Health Nerd
Health Nerd
Health Nerd
Verified account
@GidMK

Tweets

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

Tweets

  • © 2021 Twitter
  • About
  • Help Center
  • Terms
  • Privacy policy
  • Cookies
  • Ads info
Dismiss
Previous
Next

Go to a person's profile

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @

Promote this Tweet

Block

  • Tweet with a location

    You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more

    Your lists

    Create a new list


    Under 100 characters, optional

    Privacy

    Copy link to Tweet

    Embed this Tweet

    Embed this Video

    Add this Tweet to your website by copying the code below. Learn more

    Add this video to your website by copying the code below. Learn more

    Hmm, there was a problem reaching the server.

    By embedding Twitter content in your website or app, you are agreeing to the Twitter Developer Agreement and Developer Policy.

    Preview

    Why you're seeing this ad

    Log in to Twitter

    · Forgot password?
    Don't have an account? Sign up »

    Sign up for Twitter

    Not on Twitter? Sign up, tune into the things you care about, and get updates as they happen.

    Sign up
    Have an account? Log in »

    Two-way (sending and receiving) short codes:

    Country Code For customers of
    United States 40404 (any)
    Canada 21212 (any)
    United Kingdom 86444 Vodafone, Orange, 3, O2
    Brazil 40404 Nextel, TIM
    Haiti 40404 Digicel, Voila
    Ireland 51210 Vodafone, O2
    India 53000 Bharti Airtel, Videocon, Reliance
    Indonesia 89887 AXIS, 3, Telkomsel, Indosat, XL Axiata
    Italy 4880804 Wind
    3424486444 Vodafone
    » See SMS short codes for other countries

    Confirmation

     

    Welcome home!

    This timeline is where you’ll spend most of your time, getting instant updates about what matters to you.

    Tweets not working for you?

    Hover over the profile pic and click the Following button to unfollow any account.

    Say a lot with a little

    When you see a Tweet you love, tap the heart — it lets the person who wrote it know you shared the love.

    Spread the word

    The fastest way to share someone else’s Tweet with your followers is with a Retweet. Tap the icon to send it instantly.

    Join the conversation

    Add your thoughts about any Tweet with a Reply. Find a topic you’re passionate about, and jump right in.

    Learn the latest

    Get instant insight into what people are talking about now.

    Get more of what you love

    Follow more accounts to get instant updates about topics you care about.

    Find what's happening

    See the latest conversations about any topic instantly.

    Never miss a Moment

    Catch up instantly on the best stories happening as they unfold.

    1. Health Nerd‏Verified account @GidMK 25 Aug 2020

      25/n Think about this for a second. Even if that number was correct - i.e. 20.5% rather than the wrong 28% - it doesn't make any sense because it assumes that 100% of women who have had miscarriages drank 200mg of caffeine a day

      1 reply 0 retweets 22 likes
      Show this thread
    2. Health Nerd‏Verified account @GidMK 25 Aug 2020

      26/n This number - called the Population Attributable Fraction (PAF) - is actually calculable. The formula is pretty simple:pic.twitter.com/eoTJ5euQVv

      1 reply 0 retweets 18 likes
      Show this thread
    3. Health Nerd‏Verified account @GidMK 25 Aug 2020

      27/n In this case, with a prevalence of ~35% for caffeine intake of 200mg or higher, the number of miscarriages attributable to this is: 0.35*(1-(1/1.28)) = 0.763 = ~76,300 miscarriages So, about a quarter of what's in this study

      2 replies 1 retweet 22 likes
      Show this thread
    4. Health Nerd‏Verified account @GidMK 25 Aug 2020

      28/n This actually makes perfect sense when you think about it. Remember, the ABSOLUTE risk increase of miscarriage for women who drink caffeine is pretty small - 1-2% - so it doesn't really make sense to say that up to a third of miscarriages are caused by caffeine

      1 reply 7 retweets 50 likes
      Show this thread
    5. Health Nerd‏Verified account @GidMK 25 Aug 2020

      29/n And yet, these figures were picked up in the media and thrown around as if certainly true, which is very worrying!pic.twitter.com/5v3SQPeKtn

      1 reply 0 retweets 28 likes
      Show this thread
    6. Health Nerd‏Verified account @GidMK 25 Aug 2020

      30/n More broadly speaking, do we know that caffeine causes bad pregnancy outcomes? That is a VERY tricky question to answer

      1 reply 1 retweet 21 likes
      Show this thread
    7. Health Nerd‏Verified account @GidMK 25 Aug 2020

      31/n This narrative review argues yes, absolutely, and while most people would agree a LOT of caffeine is a problem, much previous research has said that small amounts are probably not so badpic.twitter.com/50siPcJ8HD

      4 replies 1 retweet 24 likes
      Show this thread
    8. Health Nerd‏Verified account @GidMK 25 Aug 2020

      32/n This narrative review argues that all such studies are the product of industry funding, which is not entirely untrue, but also doesn't really tell the whole story given that it disagrees with non-industry studies as wellpic.twitter.com/ynC0gKO1nj

      1 reply 0 retweets 14 likes
      Show this thread
    9. Health Nerd‏Verified account @GidMK 25 Aug 2020

      33/n Ultimately, reviews like this come down to opinions Do we think that Prof James is correct and caffeine is definitely bad? Well, maybe. It depends on your perspective I think

      1 reply 0 retweets 14 likes
      Show this thread
    10. Health Nerd‏Verified account @GidMK 25 Aug 2020

      34/n What we can't say is that this is new evidence, or even that we've proven anything here. It's one well-researched opinion that you may or may not agree with 🤷‍♂️

      1 reply 1 retweet 19 likes
      Show this thread
      Health Nerd‏Verified account @GidMK 25 Aug 2020

      35/n Anyway, regardless of what you think of the review, it's probably worth correcting the inaccurate table @BMJ_EBM

      8:00 PM - 25 Aug 2020
      • 2 Retweets
      • 48 Likes
      • Atticus Bitch Junior VP Rabbi Ruti Regan 🏳️‍🌈🇺🇸 Hawaiian Mega Punch🍹 Amber A. Diaz Sergeant Pluck ANISH KAR Addleben Victory is mine
      4 replies 2 retweets 48 likes
        1. New conversation
        2. Health Nerd‏Verified account @GidMK 25 Aug 2020

          36/n Also, for the record, I think the conclusions are pretty massively overstated, and also miss out a key part of recommendations which is the question of whether they'll be followed!pic.twitter.com/uPDQfv4aHI

          3 replies 0 retweets 24 likes
          Show this thread
        3. Health Nerd‏Verified account @GidMK 26 Aug 2020

          37/n I should also say that I thoroughly dislike opinion pieces and media attention like this The evidence hasn't changed, and quite frankly I think pregnant people have enough to worry about without the fear that a cup of coffee will cause a miscarriage

          8 replies 9 retweets 98 likes
          Show this thread
        4. End of conversation
        1. Krista Tee‏ @kristatee 25 Aug 2020
          Replying to @GidMK @BMJ_EBM

          Oops. Silly math. So to sum up: caffeinated tea OK coffee (caffeinated or decaf) BAD Relative Risk =/= Absolute Riskpic.twitter.com/tWqa6FQxwr

          0 replies 0 retweets 0 likes
          Thanks. Twitter will use this to make your timeline better. Undo
          Undo
        1. PHI PHI PHI, MD‏ @PHI_PHI_PHI_MD 25 Aug 2020
          Replying to @GidMK @BMJ_EBM

          Thanks for such a detailed review! What is the word for the next review that includes this narrative review as part of it’s review?

          0 replies 0 retweets 1 like
          Thanks. Twitter will use this to make your timeline better. Undo
          Undo
        1. This Tweet is unavailable.
        2. Health Nerd‏Verified account @GidMK 25 Aug 2020

          No. The conclusion is that no level of caffeine intake is acceptable for pregnant women, and so women should be advised to have no caffeine while pregnant. Obviously, I disagree

          0 replies 0 retweets 1 like
        3. End of conversation
        1. New conversation
        2.  💧 Ian "Department of Diseasology"  🍩 Musgrave‏ @ianfmusgrave 25 Aug 2020
          Replying to @GidMK @BMJ_EBM

          Worth a letter to the editor?

          1 reply 0 retweets 0 likes
        3. Health Nerd‏Verified account @GidMK 25 Aug 2020
          Replying to @ianfmusgrave @BMJ_EBM

          So many studies, so little time

          2 replies 0 retweets 0 likes
        4. Show replies

      Loading seems to be taking a while.

      Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.

        Promoted Tweet

        false

        • © 2021 Twitter
        • About
        • Help Center
        • Terms
        • Privacy policy
        • Cookies
        • Ads info