Dr John
@drjohndev.bsky.social
Physics PhD | Creator of Dr. John YouTube Channel⚛️| Building bridges between physics, society, & tech 🌉| #SciComm
YT Channel:
http://youtube.com/@DrJohnDev
YT Channel:
http://youtube.com/@DrJohnDev
Link to LIVE Stream:
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Does Fluoride lower IQ? New JAMA Study weighs in | LIVE
YouTube video by Dr John
youtube.com
February 1, 2025 at 12:22 AM
Link to LIVE Stream:
youtube.com/live/2_Kt5Xm...
youtube.com/live/2_Kt5Xm...
Hope to see you there!
youtube.com/live/ZRrE57n...
Fluoride in our Water: the science you need to know
LIVE STREAM with Q&A
Thursday 1/16 at 5PM Pacific Time (8PM Eastern Time)
youtube.com/live/ZRrE57n...
Fluoride in our Water: the science you need to know
LIVE STREAM with Q&A
Thursday 1/16 at 5PM Pacific Time (8PM Eastern Time)
YouTube
Share your videos with friends, family, and the world
youtube.com
January 16, 2025 at 3:08 AM
Hope to see you there!
youtube.com/live/ZRrE57n...
Fluoride in our Water: the science you need to know
LIVE STREAM with Q&A
Thursday 1/16 at 5PM Pacific Time (8PM Eastern Time)
youtube.com/live/ZRrE57n...
Fluoride in our Water: the science you need to know
LIVE STREAM with Q&A
Thursday 1/16 at 5PM Pacific Time (8PM Eastern Time)
My limited experience has shown me the best science discussions are on THIS platform. Aside from a couple of notable exceptions (who also happen to be on here as well 😅)
December 1, 2024 at 3:33 AM
My limited experience has shown me the best science discussions are on THIS platform. Aside from a couple of notable exceptions (who also happen to be on here as well 😅)
This is why I’m frustrated at the tech world. Science can point out externalities of tech. These aren’t great selling points in VC pitches, so they’re vehemently ridiculed and ignored.
November 30, 2024 at 6:51 AM
This is why I’m frustrated at the tech world. Science can point out externalities of tech. These aren’t great selling points in VC pitches, so they’re vehemently ridiculed and ignored.
Awesome! Thanks so much! Excellent list and thanks for putting it together!
November 29, 2024 at 5:59 PM
Awesome! Thanks so much! Excellent list and thanks for putting it together!
Nice list. Could I be included on here as well? Appreciate your work in getting this together!
November 29, 2024 at 2:33 PM
Nice list. Could I be included on here as well? Appreciate your work in getting this together!
Oh boy, not sure I like where this is headed. Need to check it out!
November 29, 2024 at 2:28 PM
Oh boy, not sure I like where this is headed. Need to check it out!
It’s literally a calming experience. The name is true to form.
November 26, 2024 at 10:07 PM
It’s literally a calming experience. The name is true to form.
That’s an interesting case study as well. And right, this was likely a very biased work. I’ll be on the lookout for others. I was seeing where this info of IQ and fluoride was coming from and sort of gasped at the highest ranked published study in search. The media should dig into this more.
November 26, 2024 at 9:53 PM
That’s an interesting case study as well. And right, this was likely a very biased work. I’ll be on the lookout for others. I was seeing where this info of IQ and fluoride was coming from and sort of gasped at the highest ranked published study in search. The media should dig into this more.
And yes, I would suspect other environmental factors would play a much larger role in IQ than fluoride concentration. It's not clear what the physical mechanism would be for Fluoride and brain activity. Bone can at least act as a binding element for the negative ions.
November 26, 2024 at 9:33 PM
And yes, I would suspect other environmental factors would play a much larger role in IQ than fluoride concentration. It's not clear what the physical mechanism would be for Fluoride and brain activity. Bone can at least act as a binding element for the negative ions.
Really appreciate you sharing your thoughts on this. I couldn't believe this was peer reviewed either. Not 100% sure if this is the main study on the matter, but it seems riddled with error and inconclusive at best. It was the first study to appear in Google search on the matter.
November 26, 2024 at 9:31 PM
Really appreciate you sharing your thoughts on this. I couldn't believe this was peer reviewed either. Not 100% sure if this is the main study on the matter, but it seems riddled with error and inconclusive at best. It was the first study to appear in Google search on the matter.
I second that! And add me to that list as well 😅
November 26, 2024 at 9:22 PM
I second that! And add me to that list as well 😅
I thought so as well. The study concludes with an extremely low p-value as well. It’s more than subtle data massaging.
November 26, 2024 at 9:19 PM
I thought so as well. The study concludes with an extremely low p-value as well. It’s more than subtle data massaging.
What are your thoughts? 🤔 Let me know! I'm working on a video for my YouTube channel on this topic, and the more input from experts and scientists, the better! Best comments will get put in the video :)
November 26, 2024 at 8:44 PM
What are your thoughts? 🤔 Let me know! I'm working on a video for my YouTube channel on this topic, and the more input from experts and scientists, the better! Best comments will get put in the video :)
🧪4/ IQ tests in general are very questionable scientifically. It is widely believed that they're unbiased & fair, but in reality, the tests probe specific cognitive biases held by the test makers. It's difficult to interpret how these tests apply to disparate villages under non-Western education.
November 26, 2024 at 8:44 PM
🧪4/ IQ tests in general are very questionable scientifically. It is widely believed that they're unbiased & fair, but in reality, the tests probe specific cognitive biases held by the test makers. It's difficult to interpret how these tests apply to disparate villages under non-Western education.
🧪3/ The correlation in the data only arises after artificially binning the IQ levels. For example, the authors of the study assigned grade 1 as IQ >95%, grade 2 as IQ between 75-95%, grade 3 as 25-75%, grade 4 as 5-25%, and then grade 5 as <5%. The divisions and cutoffs are arbitrary.
November 26, 2024 at 8:44 PM
🧪3/ The correlation in the data only arises after artificially binning the IQ levels. For example, the authors of the study assigned grade 1 as IQ >95%, grade 2 as IQ between 75-95%, grade 3 as 25-75%, grade 4 as 5-25%, and then grade 5 as <5%. The divisions and cutoffs are arbitrary.
🧪2/ The fluoride concentration levels along the horizontal axis are out of order. The Fluoride concentration does not monotonically rise from left to right, but the trend line monotonically decreases. This is misleading data presentation.
November 26, 2024 at 8:44 PM
🧪2/ The fluoride concentration levels along the horizontal axis are out of order. The Fluoride concentration does not monotonically rise from left to right, but the trend line monotonically decreases. This is misleading data presentation.
🧪1/ The mean IQ is actually highest for the medium level of Fluoride concentration (1.2-2ppm). In the study, participants consuming the medium Fluoride levels scored on average 15 points higher in boys, and 17 points higher in girls.
November 26, 2024 at 8:44 PM
🧪1/ The mean IQ is actually highest for the medium level of Fluoride concentration (1.2-2ppm). In the study, participants consuming the medium Fluoride levels scored on average 15 points higher in boys, and 17 points higher in girls.
Wow! Incredible stuff. I can’t believe how fast the rotation rate is! Pulsars are like the data centers of the Milky Way!
November 25, 2024 at 6:44 PM
Wow! Incredible stuff. I can’t believe how fast the rotation rate is! Pulsars are like the data centers of the Milky Way!
Wow, thanks for the great explanation! I need to read up more on pulsars. I regret not taking more astronomy in grad school. The signal looks great and the precision is really extraordinary to see.
November 25, 2024 at 6:41 PM
Wow, thanks for the great explanation! I need to read up more on pulsars. I regret not taking more astronomy in grad school. The signal looks great and the precision is really extraordinary to see.
And a few follow ups 😅 What characteristics of the binary star can you determine from the pulse spectra? Rotation rate? Mass? Distance? Again, really cool to see this and thanks for sharing!
November 25, 2024 at 6:20 AM
And a few follow ups 😅 What characteristics of the binary star can you determine from the pulse spectra? Rotation rate? Mass? Distance? Again, really cool to see this and thanks for sharing!