Charles A. Gardner, PhD Profile picture
Sep 29, 2021 19 tweets 11 min read Read on X
THREAD
So... Here is the @US_FDA's original infographic. Let's take a good look at what they told the public about the National Youth Tobacco Survey 2020 (specifically March 2020, so just before the pandemic).

First, US high school vaping had dropped 29%
fda.gov/files/ctp-nyts…
(2)
Next... Unless you read this VERY carefully, you will not understand frequent use, and daily use, are given as a percentage of "current use."
(3)
One key to good infographics: They deliver facts clearly and need no translation.

This one from @FDATobacco needed translation. You have to do the math to find out how many US high school kids vaped frequent, or daily, in March 2020 (before the pandemic).
(4)
Now... March 2020 is over a year and a half ago. In the previous image, you may have noticed there is new data: 3 different surveys from late 2020, during the pandemic. All 3 show "youth" vaping dropped another 30% (@Stanford/@UCSF; @truthinitiative; @NIH/@NIDAnews MTF).
(5)
So I have added that 30% drop... after the 29% drop between 2019 & March 2020. These new surveys only cover up to November 2020. I called that "2021" as a fudge. I have added daily use as well, since that's publicly available in @CDCgov NYTS data.
cdc.gov/tobacco/data_s…
(6)
Obviously, US teen vaping plummeted 50% over the past two years. It is strange this is not in the news. By the end of 2020, 7 in 8 teens did not vape, and 32 in 33 did not vape daily.

What if we just look at daily use? If the public knew this, would they find it alarming?
(7)
Would the public find it alarming that in late 2020, US high school daily nicotine vaping had dropped to ~3% (from 5.7% in 2019, and 4.4% in 2020), if they understood the full context of all the psychoactive drugs teens use?
(8)
...but what about smoking? Vaping opponents are busy trying to convince the policy makers that vaping is a gateway to smoking. OK. Teens should not vape. But they have been vaping nicotine for 8 years now. Shouldn't we see that "gateway effect" by now?
(9)
...Actually, it's the opposite. Any 1st year epidemiology student can see there is an inverse relationship between teen vaping and teen smoking. When vaping increased, teen smoking plummeted. When vaping dropped, smoking stopped dropping. When vaping increased again...
(10)
The previous data were from the National Youth Tobacco Survey. So let's look at a different survey where we have data going back to 1975. The Monitoring the Future survey is conducted by the University of Michigan (my alma mater), and funded by @NIH/@NIDAnews.
(11)
Ok, ok. Let's go back to @CDC data, and yet ANOTHER huge national survey, the National Youth Risk Behavior Survey. They made a great infographic on that back in 2015. There's a similar one for 2013 with identical graphics. Strangely, they then stopped updating these.
(12)
Since I'm a good US citizen, I decided to update the graph for them. The updates are from the other huge national CDC survey, the National Youth Tobacco Survey. Here's the CDC link to the 2015 version.
cdc.gov/media/releases…

This image is updated only through March 2020.
(13)
And of course it's interesting to look even earlier. We have data going way back. Let's break this into 10 year periods. Since 1981, how fast has US high school SMOKING dropped?

1981-1991: 8% drop
1991-2001: 20% drop
2001-2011: 28% drop
2011-2020: 75% drop
(14)
US high school smoking has plummeted about 5X faster than historical trends over the past 8 years. Remember the 1970s and 1980s? Many US high schools had designated smoking zones. The legal smoking age was 16 in many states...
(15)
Now... Anti-vapers claim "nicotine harms developing brains." 15 past-Presidents of @srntorg say that's only "speculative," but whatever.
ajph.aphapublications.org/doi/pdf/10.210…

Teen smoking & vaping have both plummeted. So total teen nicotine use dropped 55% over the past 20 years.
(16)
So... where does this leave us?

Wondering why the USA is obsessed with teens while 480,000 adults die every year from smoking.

There are 18X more adults than high schoolers. Brain harms? 1 in 3 US adults used nicotine in their teens (current + former smokers). No harms.
(17)
Are e-cigarettes safer than smoking? Yes. Even @truthinitiative admits this.
docs.google.com/document/d/1Ty…

Do they help adult smokers quit? Yes.
cochranelibrary.com/cdsr/doi/10.10…

Are there 11 million US ADULT daily/regular vapers and less than 1 million teen frequent vapers? Yes.
(18)
>90% of Americans who own a device and buy e-cigarette products are adults. So the "target market" is them, plus 34 million US adults who smoke: 45 million legal adults with a demonstrated willingness to pay.

It would be insane to "target" teens-on-allowances.
(19)
480,000 US deaths from smoking. More than all Americans who died in all the wars of the entire 20th century. Every year.

If a smoker quits before age 35, they avoid all life-years lost. So, to maximize lives-saved, we should focus on helping adult smokers quit, right?

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More from @ChaunceyGardner

Apr 17
Welcome to How to Lie with Percentages 101
This seems like a minor point in @FDATobacco Director King's recent Op/Ed in Nature. Here is a quote:

"In 2021, 11.3% of high-school students used e-cigarettes, compared with 4.5% of adults."

It's misleading in 4 ways.
(1/6) 👇Image
(2/6)
First, it's not 2021 anymore. The latest data from the @CDCgov NYTS and NHIS surveys are easily available to the authors.

In 2023, 10% of US high school students vape nicotine "at least once in the past month." And 7% of adults do so "daily or some days."
(3/6)
2nd, why high school? The 2023 average for all US middle and high school students is 7.7%.


7.0% of all US adults vape nicotine as of Q3 2023.


Very similar. How awkward is THAT?cdc.gov/mmwr/volumes/7…
wwwn.cdc.gov/NHISDataQueryT…
Read 6 tweets
Apr 2
Humans have been burning leaves of the tobacco plant, and inhaling the smoke, for well over 8,000 years now.

It had ceremonial purposes, presumably when nicotine's psychoactive effects were needed: increased focus, attention and memory.

THREAD 👇 Image
(2)
For thousands of years, tobacco leaf smoking was only a thing in the Americas.

In the Old World plenty of people smoked, but not tobacco leaves. THEY smoked cannabis or opium.


Image
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(3)
Then THIS guy, Sir Walter Raleigh (1552-1618), brought tobacco leaves back to England from the New World.

He was beheaded in 1618... but not for smoking. The Spanish Ambassador demanded it, so King James approved it.

Smoking caught on in England and the Old World. Image
Read 14 tweets
Mar 21
Congratulations. You have invited PAVE to tell you about the dangers of vaping. Here's a head's up on what they are going to tell you....

THREAD
👇👇👇 Image
(2)
"Middle school use is up."

#FactCheck: MISLEADING. Middle & high school nicotine vaping dropped 61% over the past 4 years. 1.9% of teens vape nicotine daily, so may be 'hooked' (down >50% in the past 4 years).

2019:
2023: cdc.gov/mmwr/volumes/6…
cdc.gov/mmwr/volumes/7…Image
(3)
"More than 1 in 4 teens use e-cigarettes daily."

#FactCheck: FALSE. 7.7% of middle & high schoolers vape nicotine "at least once in the past 30 days."

Of THOSE, 25.2% (1 in 4) vape daily = 1.9%. So 1 in 53 vape nicotine daily. Not 1 in 4.
cdc.gov/mmwr/volumes/7…
Read 18 tweets
Jan 6
Consider "the Standard Narrative" *pushed* by tobacco control:

• Whole new generation addicted to nicotine
• E-cigarettes are a gateway to smoking
• Ecig use increased exponentially, especially among teens
• They target teens
• Nicotine harms developing brains

(1/X) 👇🧵👇Image
(1a) Where is this "whole new generation addicted to nicotine"?
In the USA, teen nicotine USE is lower today than at any time in the past 50 years.
#FactCheckMe: @CDCgov and @NIH survey dataImage
(1b) Where is this "whole new generation "addicted" to nicotine"?
The above numbers do not measure "addiction." For that, we need to look at frequent and daily use.
#FactCheckMe: @CDCgov survey dataImage
Read 17 tweets
Dec 18, 2023
Daily Brain Harm News
15 past-Presidents of the top professional society in tobacco control call "nicotine brain harm" claims "speculative" because there is no human evidence.

Yet @CDCgov continues to tell the public "nicotine harms developing brains" is a known fact.

THREAD 👇Image
(2)
How do we sort that all out? First, we should consider what actually can, tragically, cause permanent life-long harm to developing brains.

- under-nutrition
- toxic stress factors (neglect, abuse, loss of parents,
and exposure to violence) Image
(3)
Next, we should consider the evidence "nicotine harms developing brains":

Young rats have subtle reversible brain changes (not necessarily harms) that are comparable to changes caused by caffeine.

This is the evidence used to claim nicotine is a "brain poison."


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Read 10 tweets
Oct 8, 2022
This VERY common "mistake" is a direct consequence of the way CDC & FDA present teen vaping data.

It confuses journalists, the public and members of Congress.

@CDCDirector Walensky & @FDACommissioner @DrCaliff_FDA: I demand you STOP reporting Daily Use as a % of 'current use'.
(2)
Here is example #2 @CDCDirector Walensky and @DrCaliff_FDA. Another "trusted" source telling the public 1 in 4 teens use ecigs daily.

The reason this is happening is clear: You present the data in a deliberately confusing way (daily use as a percentage of 'current use').
(3)
Example #3 @CDCDirector Walensky and @DrCaliff_FDA. The way CDC and FDA communicate US teen vaping numers to the public is demonstrably confusing.
Read 9 tweets

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