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gorskon's profile
David Gorski, MD, PhD
David Gorski, MD, PhD
David Gorski, MD, PhD
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@gorskon

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David Gorski, MD, PhDVerified account

@gorskon

Surgeon/scientist promoting science in medicine and exposing quackery. Editor of Science-Based Medicine. My opinions do NOT represent those of my employers.

Michigan, USA
sciencebasedmedicine.org
Joined October 2009

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    1. Prof. Peter C Gøtzsche‏ @PGtzsche1 5 Oct 2019

      Chemotherapy for cancer? Surprisingly, for most cancers, it should be avoided. Read why for free in the chapter “Treatment of cancer” in my book, “Survival in an overmedicated world: look up the evidence yourself”: https://bit.ly/2IqXlfR  #cancer

      47 replies 176 retweets 352 likes
    2. Jonathan Howard‏ @JHowardBrainMD 5 Oct 2019
      Replying to @PGtzsche1

      May I suggest you open an oncology clinic, practice your suggestions, and publish the results?

      4 replies 7 retweets 62 likes
    3. David Gorski, MD, PhD‏Verified account @gorskon 5 Oct 2019
      Replying to @JHowardBrainMD @PGtzsche1

      IKR? Breast cancer mortality, for instance, has declined nearly 40% in three decades, thanks to, among other things, improvements in systemic therapies, including chemotherapy.

      3 replies 6 retweets 53 likes
    4. NANA@omegazeus‏ @nana7770214 7 Oct 2019
      Replying to @gorskon @JHowardBrainMD @PGtzsche1

      Doctors in cancer treatment often say that like you. But, you have forgotten to consider about lead time bias and increase in overdiagnosis caused by the spread of cancer screening. That decline cancer mortality ostensibly.

      1 reply 1 retweet 0 likes
    5. Jonathan Howard‏ @JHowardBrainMD 7 Oct 2019
      Replying to @nana7770214 @gorskon @PGtzsche1

      Here is what dr. Gorski has written on this.pic.twitter.com/IJI5U75de9

      1 reply 0 retweets 0 likes
    6. NANA@omegazeus‏ @nana7770214 7 Oct 2019
      Replying to @JHowardBrainMD @gorskon @PGtzsche1

      I checked the article you cited, however it still be misleading that Dr Gorski posted “40%”. “Breast cancer mortality” includes both of the mortality. (breast cancer diagnosed with some symptoms or detected by screening). And still remains an important issue of lead time bias.

      1 reply 1 retweet 0 likes
    7. Jonathan Howard‏ @JHowardBrainMD 7 Oct 2019
      Replying to @nana7770214 @gorskon @PGtzsche1

      We are both aware of these biases and have both written about them- though nothing original in my case.

      1 reply 0 retweets 1 like
      David Gorski, MD, PhD‏Verified account @gorskon 7 Oct 2019
      Replying to @JHowardBrainMD @nana7770214 @PGtzsche1

      That's why I emphasize: *Mortality* has decreased. Lead time and length biases due to screening affect 5 and 10 year survival statistics. Mortality statistics are not affected by these biases. I explained this issue 7 years ago and several times since.https://sciencebasedmedicine.org/cancer-care-in-the-u-s-versus-europe/ …

      1:38 PM - 7 Oct 2019
      • 1 Like
      • Christina
      2 replies 0 retweets 1 like
        1. David Gorski, MD, PhD‏Verified account @gorskon 7 Oct 2019
          Replying to @gorskon @JHowardBrainMD and

          I also discussed the matter some more here.https://sciencebasedmedicine.org/screening-for-disease-in-people-without-symptoms-the-reality/ …

          0 replies 0 retweets 0 likes
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        2. NANA@omegazeus‏ @nana7770214 9 Oct 2019
          Replying to @gorskon @JHowardBrainMD @PGtzsche1

          Your point is not wrong that lead time and length bias affect 5 and 10 year survival statistics not mortality. However, there is no definite evidence in your claim that chemotherapy is the main reason for the significant decrease of 40% in breast cancer mortality in 3 decades.

          1 reply 1 retweet 0 likes
        3. NANA@omegazeus‏ @nana7770214 9 Oct 2019
          Replying to @nana7770214 @gorskon and

          For instance, refer to the Study bellow... 『Comparisons between different polychemotherapy regimens for early breast cancer: meta-analyses of long-term outcome among 100 000 women in 123 randomised trials』https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3273723/ …

          1 reply 1 retweet 0 likes
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