Jonathan Foulds PhD
@jonathanfoulds.bsky.social
Professor of Public Health Sciences & Psychiatry at Penn State College of Medicine, Hershey PA. (views are mine only). Mainly do research on tobacco, health and nicotine addiction. Scottish. https://scholar.google.com/citations?user=oYyjpUUAAAAJ&hl=e
Pinned
With Foreword by Prof. Neal Benowitz, past President of SRNT, and Preface by Prof. Petros Levounis, immediate past President of the American Psychiatric Association. www.appi.org/Products/Add...
Nicotine boost during the puffing protocol ranged from 1.8 ng/ml to 41.7 ng/ml with an average of 16 ng/ml. Larger decreases in post-pre BOLD in the left posterior cingulate cortex were associated with increased nicotine boost levels. pubmed.ncbi.nlm.nih.gov/41343353/
January 4, 2026 at 10:45 PM
Nicotine boost during the puffing protocol ranged from 1.8 ng/ml to 41.7 ng/ml with an average of 16 ng/ml. Larger decreases in post-pre BOLD in the left posterior cingulate cortex were associated with increased nicotine boost levels. pubmed.ncbi.nlm.nih.gov/41343353/
“Public health somehow has to get around the idea that you just need to quit on your own or with a med, because quite a lot of people are interested in using a less harmful nicotine product like pouches and reducing their smoking,” jamanetwork.com/journals/jam...
Cautious Optimism for FDA's Nicotine Pouch Push
This Medical News article discusses the public health implications of the US Food and Drug Administration’s new nicotine pouch pilot program.
jamanetwork.com
January 4, 2026 at 10:40 PM
“Public health somehow has to get around the idea that you just need to quit on your own or with a med, because quite a lot of people are interested in using a less harmful nicotine product like pouches and reducing their smoking,” jamanetwork.com/journals/jam...
2 bald eagles in a field near Hershey where there was a dead deer.
December 21, 2025 at 7:42 PM
2 bald eagles in a field near Hershey where there was a dead deer.
Ben Lomond in the distance.
December 4, 2025 at 12:18 AM
Ben Lomond in the distance.
A snowy morning in Annville PA.
December 3, 2025 at 2:48 PM
A snowy morning in Annville PA.
Different surveys of tobacco use provide different estimates. This is an excellent summary of differences between 3 large US surveys. "Regardless of product, the prevalence was higher in PATH followed by NHIS and TUS-CPS, in some cases by large percentages." pmc.ncbi.nlm.nih.gov/articles/PMC...
A comparison of tobacco product prevalence by different frequency of use thresholds across three US surveys
With the increasing changes in tobacco use patterns, “current use” definition and the survey used may have important implications for monitoring population use trends. Using three US surveys (2014/15 TUS-CPS, NHIS and PATH), we compared the adult ...
pmc.ncbi.nlm.nih.gov
December 3, 2025 at 2:40 PM
Different surveys of tobacco use provide different estimates. This is an excellent summary of differences between 3 large US surveys. "Regardless of product, the prevalence was higher in PATH followed by NHIS and TUS-CPS, in some cases by large percentages." pmc.ncbi.nlm.nih.gov/articles/PMC...
Reposted by Jonathan Foulds PhD
New York Times article on science funding with some depressing but familiar curves with interactive graphics.
www.nytimes.com/interactive/...
www.nytimes.com/interactive/...
The U.S. Is Funding Fewer Grants in Every Area of Science and Medicine (Gift Article)
A quiet policy change means the government is making fewer bets on long-term science.
www.nytimes.com
December 2, 2025 at 11:57 AM
New York Times article on science funding with some depressing but familiar curves with interactive graphics.
www.nytimes.com/interactive/...
www.nytimes.com/interactive/...
Scotland fans singing Flower of Scotland before Scotland beat Denmark 4-2 to qualify for World Cup Finals for the first time in 28 years.
November 29, 2025 at 6:48 PM
Scotland fans singing Flower of Scotland before Scotland beat Denmark 4-2 to qualify for World Cup Finals for the first time in 28 years.
This is an EXCELLENT, up-to-date, evidence-based summary of the health effects of nicotine (2 pages +1p of references) and I recommend it to everyone interested in this topic. ash.org.uk/uploads/ASH-...
November 29, 2025 at 6:41 PM
This is an EXCELLENT, up-to-date, evidence-based summary of the health effects of nicotine (2 pages +1p of references) and I recommend it to everyone interested in this topic. ash.org.uk/uploads/ASH-...
I've been to Yosemite NP before and there were no separate fees according to residence. In fact if you look at the website right now it says, "if there is no staff at your entrance when you drive in please pay on the way out."
November 26, 2025 at 2:42 PM
I've been to Yosemite NP before and there were no separate fees according to residence. In fact if you look at the website right now it says, "if there is no staff at your entrance when you drive in please pay on the way out."
Seriously, how would this be implemented? Say a group of US teenagers living in San Francisco decide to take a bus trip to Yosemite NP. How would each person prove they are US residents rather than Canadian tourists? Do we all have to start carrying papers when visiting the park?
November 26, 2025 at 10:52 AM
Seriously, how would this be implemented? Say a group of US teenagers living in San Francisco decide to take a bus trip to Yosemite NP. How would each person prove they are US residents rather than Canadian tourists? Do we all have to start carrying papers when visiting the park?
Reposted by Jonathan Foulds PhD
Look world, we're the only one in step.
November 24, 2025 at 10:01 PM
Look world, we're the only one in step.
Apart from everything else, these are 2 different owl species. AI for sure.
November 24, 2025 at 12:07 AM
Apart from everything else, these are 2 different owl species. AI for sure.
Awesome performance by Scotland last night. Great to have qualified for the #WorldCup2026 for the first time in over 25 years.
November 20, 2025 at 12:22 AM
Awesome performance by Scotland last night. Great to have qualified for the #WorldCup2026 for the first time in over 25 years.
Reposted by Jonathan Foulds PhD
The number of international college students enrolling in their American schools for the first time decreased by 17 percent this fall, according to data published on Monday.
New International Student Enrollments Plummeted This Fall, Survey Finds
www.nytimes.com
November 17, 2025 at 9:20 AM
The number of international college students enrolling in their American schools for the first time decreased by 17 percent this fall, according to data published on Monday.
Ben Lomond, towering above Loch Lomond in Scotland. (November 15, 2025).
November 17, 2025 at 10:16 AM
Ben Lomond, towering above Loch Lomond in Scotland. (November 15, 2025).
#NorthernLights visible over Annville Pennsylvania just after 9pm on 11/11/25.
November 12, 2025 at 3:40 PM
#NorthernLights visible over Annville Pennsylvania just after 9pm on 11/11/25.
Reposted by Jonathan Foulds PhD
The science of storytelling with author and humanist Kurt Vonnegut 😅❤️
Kurt was born #OnThisDay 1922.
Kurt was born #OnThisDay 1922.
November 11, 2025 at 12:01 PM
The science of storytelling with author and humanist Kurt Vonnegut 😅❤️
Kurt was born #OnThisDay 1922.
Kurt was born #OnThisDay 1922.
Reposted by Jonathan Foulds PhD
Very well done story on 60 Minutes about the harms of grant terminations and freezes at Harvard with Joan Brugge, Don Engbar, David Liu, and a very compelling young cancer patient, now cured with Liu's technology.
Transcript and video here
www.cbsnews.com/news/researc...
Transcript and video here
www.cbsnews.com/news/researc...
Battle between Trump and universities hurting scientific research in need of federal funding
Federal research funding to universities has fueled breakthroughs for years. The White House is pressuring universities to align with the president's political agenda, or risk losing their funding.
www.cbsnews.com
November 10, 2025 at 1:03 AM
Very well done story on 60 Minutes about the harms of grant terminations and freezes at Harvard with Joan Brugge, Don Engbar, David Liu, and a very compelling young cancer patient, now cured with Liu's technology.
Transcript and video here
www.cbsnews.com/news/researc...
Transcript and video here
www.cbsnews.com/news/researc...
Fall in (a) Hershey PA and (b) Denver CO.
October 29, 2025 at 4:23 AM
Fall in (a) Hershey PA and (b) Denver CO.
The Garden of the Gods, Colorado Springs.
October 26, 2025 at 10:30 AM
The Garden of the Gods, Colorado Springs.
First time I read this I thought that bottom-left sea-gull was called Poseidon, and I agreed...that's a weird name for a seagull. Then I saw the dude and realized who you were actually referring to!
a close up of a door with the words `` got it '' on it .
ALT: a close up of a door with the words `` got it '' on it .
media.tenor.com
October 22, 2025 at 6:32 PM
First time I read this I thought that bottom-left sea-gull was called Poseidon, and I agreed...that's a weird name for a seagull. Then I saw the dude and realized who you were actually referring to!
Reposted by Jonathan Foulds PhD
Reposted by Jonathan Foulds PhD
Meet Larry, the world’s most cited cat
www.science.org/content/arti...
www.science.org/content/arti...
How easy is it to fudge your scientific rank? Meet Larry, the world’s most cited cat
“Exercise in absurdity” reveals flaws in Google Scholar’s productivity metrics
www.science.org
October 17, 2025 at 1:53 PM
Meet Larry, the world’s most cited cat
www.science.org/content/arti...
www.science.org/content/arti...