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
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-...
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.
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.
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.
Fall in Hershey, Pennsylvania.
October 17, 2025 at 1:50 PM
Fall in Hershey, Pennsylvania.
A bald eagle flying over Swatara Creek, Pennsylvania.
October 12, 2025 at 9:26 PM
A bald eagle flying over Swatara Creek, Pennsylvania.
Wait, I thought he'd already discovered that circumcision caused it. That probably explains why they don't have ASD in Denmark. Oh, wait....
October 10, 2025 at 8:58 PM
Wait, I thought he'd already discovered that circumcision caused it. That probably explains why they don't have ASD in Denmark. Oh, wait....
A Northern Harrier and a Cooper's Hawk having a disagreement in Annville Pennsylvania.
October 10, 2025 at 3:14 PM
A Northern Harrier and a Cooper's Hawk having a disagreement in Annville Pennsylvania.
A Northern Harrier and a Cooper's Hawk having an argument, in Annville, Pennsylvania.
October 10, 2025 at 2:49 AM
A Northern Harrier and a Cooper's Hawk having an argument, in Annville, Pennsylvania.
Nicotine pouches with high nicotine content are capable of delivering higher peak plasma nicotine concentrations. pubmed.ncbi.nlm.nih.gov/41044396/
October 6, 2025 at 7:47 PM
Nicotine pouches with high nicotine content are capable of delivering higher peak plasma nicotine concentrations. pubmed.ncbi.nlm.nih.gov/41044396/
This one was taken a while ago with my cell-phone held up to a scope.
October 6, 2025 at 7:23 PM
This one was taken a while ago with my cell-phone held up to a scope.
Scenes from Central Pennsylvania as the sun goes down.
October 6, 2025 at 6:32 PM
Scenes from Central Pennsylvania as the sun goes down.
Well it was a bummer to lose in double overtime after drawing even with 30s to go in the 4th quarter, but the atmosphere was awesome and I have to say Oregon are a very good team.
September 30, 2025 at 5:56 PM
Well it was a bummer to lose in double overtime after drawing even with 30s to go in the 4th quarter, but the atmosphere was awesome and I have to say Oregon are a very good team.
"Biochemically verified substance use indicated 7.1% of 15-16 year olds engaged in moderate+ cannabis use, 0.3% heavily used alcohol, and 4.7% heavily used nicotine." Hair analyses in the ABCD study (US nationwide, n=11,868; age 9-10 at Baseline, age 15-16 at Wave 6). www.medrxiv.org/content/10.1...
September 26, 2025 at 6:33 PM
"Biochemically verified substance use indicated 7.1% of 15-16 year olds engaged in moderate+ cannabis use, 0.3% heavily used alcohol, and 4.7% heavily used nicotine." Hair analyses in the ABCD study (US nationwide, n=11,868; age 9-10 at Baseline, age 15-16 at Wave 6). www.medrxiv.org/content/10.1...
Are you ready for the Penn State football v Oregon whiteout game on Saturday evening?
September 25, 2025 at 10:10 PM
Are you ready for the Penn State football v Oregon whiteout game on Saturday evening?
"Cytisinicline significantly increased quitting for smokers with and without COPD and was well tolerated. The findings support cytisinicline as a viable treatment for smokers with COPD who want to quit." pubmed.ncbi.nlm.nih.gov/40962497/
September 18, 2025 at 9:43 PM
"Cytisinicline significantly increased quitting for smokers with and without COPD and was well tolerated. The findings support cytisinicline as a viable treatment for smokers with COPD who want to quit." pubmed.ncbi.nlm.nih.gov/40962497/
NNAL is a metabolite of NNK, a potent lung carcinogen. This study shows the urine NNAL concentration in adult regular cigarette smokers and exclusive nicotine e-cig users 2013-2018. NNAL is consistently >95% lower in ecig users than smokers. pmc.ncbi.nlm.nih.gov/articles/PMC...
September 10, 2025 at 5:27 PM
NNAL is a metabolite of NNK, a potent lung carcinogen. This study shows the urine NNAL concentration in adult regular cigarette smokers and exclusive nicotine e-cig users 2013-2018. NNAL is consistently >95% lower in ecig users than smokers. pmc.ncbi.nlm.nih.gov/articles/PMC...
iSENZIA™ heats a tea-based substrate to generate an inhalable nicotine aerosol. It has far lower toxicant delivery than cigarettes, but also has a much lower nicotine delivery than cigarettes (Cmax around 6 ng/ml).This is NOT "satisfactory" for most smokers. www.frontiersin.org/journals/tox...
August 28, 2025 at 2:55 PM
iSENZIA™ heats a tea-based substrate to generate an inhalable nicotine aerosol. It has far lower toxicant delivery than cigarettes, but also has a much lower nicotine delivery than cigarettes (Cmax around 6 ng/ml).This is NOT "satisfactory" for most smokers. www.frontiersin.org/journals/tox...
Here is the data from USA: Look at the big increase in youth cigarette smoking after the peak in youth nicotine vaping 2018-19. Oh wait, there is none.. in fact youth smoking continued to decline to historic lows. In 2024 only 0.4% of US high school seniors smoked cigarettes daily (>25% in 1997)
August 22, 2025 at 2:57 PM
Here is the data from USA: Look at the big increase in youth cigarette smoking after the peak in youth nicotine vaping 2018-19. Oh wait, there is none.. in fact youth smoking continued to decline to historic lows. In 2024 only 0.4% of US high school seniors smoked cigarettes daily (>25% in 1997)
Simon, here is the latest data on US youth past 30 day cigarette smoking and nicotine vaping. Look at that increase in smoking following the big increase in nicotine vaping 2018-19...oh wait, youth smoking rates just continued to fall to historic lows (0.4% of 12 graders now daily cig smokers).
August 22, 2025 at 2:52 PM
Simon, here is the latest data on US youth past 30 day cigarette smoking and nicotine vaping. Look at that increase in smoking following the big increase in nicotine vaping 2018-19...oh wait, youth smoking rates just continued to fall to historic lows (0.4% of 12 graders now daily cig smokers).