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Johannes Thrul

@drjthrul.bsky.social
1.1K followers 439 following 89 posts

mHealth and substance use research, Associate Prof, @JohnsHopkinsDMH, @JohnsHopkinsSPH, immigrant 🇩🇪 ➡️ 🇺🇸 thrulresearchlab.com

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Reposted by Johannes Thrul
Public Health On Call Podcast @publichealthpod.bsky.social · 14/09/2026
In August, Meta agreed to pay up to $17.1 billion over claims that it harmed children by fostering unhealthy digital habits. @drjthrul.bsky.social and Tamar Mendelson discuss what comes next and what parents should take away from the settlement. 🎧 podcast.publichealth.jhu.edu/meta-settled...
Promo graphic for episode 1105 of Public Health On Call titled Meta Settles Case Over Social Media Addiction Claims. Additional text reads: An addiction researcher and an expert in adolescent mental health explain what comes next.
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Reposted by Johannes Thrul
Journal of Studies on Alcohol and Drugs @jsadjournal.bsky.social · 27/05/2026
Text Messaging Intervention for Postpartum Alcohol Use: Micro-Randomized Trial Supports Feasibility, Acceptability, and Mater... (new in @jsadjournal.bsky.social 87/3) @johnshopkinssph.bsky.social @janardan.bsky.social @drjthrul.bsky.social @capraustralia.bsky.social www.jsad.com/doi/full/10....
jsad.com
Text Messaging Intervention for Postpartum Alcohol Use: Micro-Randomized Trial Supports Feasibility, Acceptability, and Maternal Message Preference: Journal of Studies on Alcohol and Drugs: Vol 87, No 3
Objective: This pilot micro-randomized trial (MRT) evaluated the feasibility of the MRT design and compared the acceptability and preliminary impacts of drinking-focused and maternal-focused text messages to inform the development of a tailored, just-in-time adaptive text messaging intervention for postpartum at-risk alcohol use. Method: Postpartum mothers (N = 65) participated in a 28-day MRT. Participants completed ecological momentary assessment (EMA) surveys upon waking (morning survey) at two random times daily (hourly surveys), with an optional night survey (night survey). After each hourly and night survey, participants were randomized to receive either a maternal-focused message, a drinking-focused message, or no message. Check-in surveys assessed intermediate (motivation, maternal self-efficacy, drinking self-efficacy, self-regulation, and craving) and primary (alcohol use) outcomes 15 minutes later. Results: Compliance rates for all survey types exceeded 70%, except for optional night surveys. Participants reported a low burden associated with the MRT. Participants were more likely to rate maternal-focused messages as helpful and evoking positive feelings compared with drinking-focused messages. A significant effect of receiving an intervention message (vs. no message) was found for drinking self-efficacy (DSE), with those who received a message reporting higher DSE than those who received no message, and no difference between message types. Significant time-by-condition interactions revealed that the effect of maternal messages decreased over time, whereas DSE increased over time for the control condition. Conclusions: Findings support the feasibility and acceptability of the MRT design in postpartum mothers with at-risk drinking histories and inform the development of a tailored text messaging intervention for this population. Public health significance statement: Alcohol use during the early postpartum period is an important public health problem that can interfere with a mother’s ability to care for her baby and is associated with increased risk for child abuse and neglect and poor long-term child health and developmental outcomes. Postpartum mothers are often not connected to formal service systems and often do not receive needed help for alcohol use because of the stigma associated with substance use in mothers and fears of child protective services involvement if they disclose alcohol use to a professional. Digital interventions delivered via text messaging have the potential to provide confidential and convenient support to postpartum mothers to reduce risks associated with alcohol use.
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Reposted by Johannes Thrul
Journal of Studies on Alcohol and Drugs @jsadjournal.bsky.social · 12/05/2026
JSAD on NPR: Cancer warning labels on alcohol may motivate people to drink less, study says @uncpopcenter.bsky.social @argdotorg.bsky.social @annagrummon.bsky.social @publichealthinst.bsky.social @drjthrul.bsky.social @johnshopkinssph.bsky.social www.npr.org/2026/05/07/n...
npr.org
Cancer warning labels on alcohol may motivate people to drink less, study says
Mounting evidence has linked alcohol to higher risks of cancer but many people aren't aware. New findings suggest labels that make the link clear may motivate people to cut back on drinking.
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Johannes Thrul @drjthrul.bsky.social · 12/05/2026
Internal social media documents revealed in court cases are a goldmine for public health and policy. Our new op-ed in @sfchronicle.com makes the case for a systematic public archive. With @jasonmnagata.bsky.social and Caleb Alexander www.sfchronicle.com/opinion/open... @dmh-bsph.bsky.social
sfchronicle.com
Social media companies keep losing in court. Here’s how we can keep the pressure on them
OPINION: With recent court victories against Meta and YouTube in New Mexico and California, internal documents are being released, creating the need for a publicly accessible database.
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Johannes Thrul @drjthrul.bsky.social · 01/05/2026
Grateful to have our recent study on social media disorder, internet gaming disorder, and mental health among Saudi high school students written up on the @johnshopkinssph.bsky.social website: publichealth.jhu.edu/2026/social-... @dmh-bsph.bsky.social
publichealth.jhu.edu
Social Media, Gaming Linked to Mental Distress Among Students | Johns Hopkins Bloomberg School of Public Health
A survey of high school students in Saudi Arabia found that social media and gaming are associated with higher levels of mental distress.
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Johannes Thrul @drjthrul.bsky.social · 29/04/2026
Timely paper: With federal cannabis rescheduling back in the news, our new paper in @addictionjournal.bsky.social analyzed 43k public comments submitted to the DEA. ~92% supported removing cannabis from Schedule I — most wanted to go further than Schedule III. Full paper: doi.org/10.1111/add....
doi.org
Characterizing public comments via Regulations.gov in response to proposed cannabis rescheduling in the United States
Aims The United States Drug Enforcement Administration's (DEA) proposed rescheduling of cannabis from Schedule I to Schedule III under the Controlled Substances Act marks a significant shift in fede...
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Reposted by Johannes Thrul
Public Health On Call Podcast @publichealthpod.bsky.social · 21/04/2026
New research shows that adolescents with cannabis use disorder could be at a higher risk of developing psychiatric disorders than adults with similar habits. Get the details on the study from @dmh-bsph.bsky.social researcher @drjthrul.bsky.social 👇 🔗 podcast.publichealth.jhu.edu/1038-cannabi...
Graphic with the title "Cannabis Use Disorder Among Young People and Diagnosis of Psychiatric Disorders." Additional text reads: New research suggests a link between problematic patterns of cannabis use and mental disorders like schizophrenia and depression in young adults.
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Public Health On Call Podcast @publichealthpod.bsky.social · 20/04/2026
Compared to adults with similar habits, young adults with patterns of problematic cannabis use are at an elevated risk for other mental disorders like depression and schizophrenia. @drjthrul.bsky.social details a recent study on this potential link. 🎧 podcast.publichealth.jhu.edu/1038-cannabi...
Promo graphic for episode 1038 of Public Health On Call titled Cannabis Use Disorder and Psychiatric Conditions. Additional text reads: New findings suggest that adolescents with patterns of problematic cannabis use are at an elevated risk for other mental disorders.
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Reposted by Johannes Thrul
Johns Hopkins Bloomberg School of Public Health @johnshopkinssph.bsky.social · 07/04/2026
We are proud to again be recognized by our peer schools and programs as the #1 public health school in the nation, as reported by U.S. News & World Report. The Bloomberg School is grateful to partner closely with our peers on our shared commitment to improving health for people everywhere.
publichealth.jhu.edu
Johns Hopkins Bloomberg School of Public Health Again Rated #1 by Peers in U.S. News & World Report | Johns Hopkins Bloomberg School of Public Health
The School has held the #1 spot since the rankings began in 1994. The School has also been named by peers as a leader in five specialty areas within public health this year.
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Reposted by Johannes Thrul
Johns Hopkins Bloomberg School of Public Health @johnshopkinssph.bsky.social · 17/03/2026
“Is cannabis use a unique risk factor compared to the use of other substances such as alcohol, opioids, or cocaine? That’s the question we addressed in this study, and our findings suggest that that relative risk depends on the user’s age,” says @dmh-bsph.bsky.social's @drjthrul.bsky.social
publichealth.jhu.edu
Cannabis Use Disorder Among Young People Linked to Diagnosis of Psychiatric Disorders | Johns Hopkins Bloomberg School of Public Health
Analysis of nearly 700,000 health records reveals age-related association between cannabis use disorder and subsequent psychiatric disorders diagnoses.
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Johannes Thrul @drjthrul.bsky.social · 19/12/2025
1/3 I was recently interviewed by @NPR about alcohol and health: www.npr.org/2025/12/08/n... @johnshopkinssph.bsky.social @dmh-bsph.bsky.social
npr.org
Does one drink make you dizzy? Why alcohol hits us harder as we age
For many people, the holidays mean more parties and more occasions to drink. But if you've noticed that one cocktail hits you harder than it used to, there's a scientific reason to explain it.
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Johannes Thrul @drjthrul.bsky.social · 18/12/2025
1/3 Cannabis rescheduling from Schedule I to III is a major federal policy shift that acknowledges medicinal use and lowers barriers to research and clinical study.
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Johannes Thrul @drjthrul.bsky.social · 03/12/2025
1/3 Technology is a critical determinant of population health and is shaping sleep, social connection, and identity formation at a massive scale. Several colleagues and I contributed to this BSPH Magazine article on technology and mental health: magazine.publichealth.jhu.edu/2025/mental-...
magazine.publichealth.jhu.edu
Mental Health in the Scroll Age | Hopkins Bloomberg Public Health Magazine
What is digital life doing to young minds?
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Johannes Thrul @drjthrul.bsky.social · 26/11/2025
1/4 New publications from our team on just-in-time mobile interventions Smartphones offer a way to deliver high-quality support when people actually need it: Applied here at the moment they feel an urge to smoke.
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Johannes Thrul @drjthrul.bsky.social · 21/11/2025
1/2 Wonderful news and proud mentor moment: My first-ever PhD student and former mentee, Dr. Courtney Nordeck, received her first R01! Congrats @cdnordeck.bsky.social! Securing this level of funding is a massive validation of grit, resilience, and scientific vision.
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Johannes Thrul @drjthrul.bsky.social · 20/11/2025
1/5 Important new work on cannabis and alcohol substitution. I got to weigh in on these results for @nytimes.com Link to original paper: psychiatryonline.org/doi/10.1176/... Link to NYT article: www.nytimes.com/2025/11/19/w...
psychiatryonline.org
Acute Effects of Cannabis on Alcohol Craving and Consumption: A Randomized Controlled Crossover Trial | American Journal of Psychiatry
Objective:Cannabis use is strongly linked with heavy drinking and worse alcohol treatment outcomes; however, it may also contribute to decreased alcohol consumption. To date, no human studies have est...
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Johannes Thrul @drjthrul.bsky.social · 17/11/2025
It was a pleasure talking to @publichealthpod.bsky.social about the health effects of alcohol, especially the cancer risk. Thanks for having me on the podcast! @dmh-bsph.bsky.social @johnshopkinssph.bsky.social
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Reposted by Johannes Thrul
Center for Mental Health and Addiction Policy @jhsph-cmap.bsky.social · 16/10/2025
We spoke with @johnshopkinssph.bsky.social's Dr. Johannes Thrul to better understand his groundbreaking research into cannabis use. This MPI work w/ Dr. Ryan Vandrey is shaping the future of addiction science and public health. 🔗 Read the full story: bit.ly/46DOu66
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Reposted by Johannes Thrul
Journal of Studies on Alcohol and Drugs @jsadjournal.bsky.social · 14/10/2025
Text Messaging Intervention for Postpartum Alcohol Use: Micro-Randomized Trial Supports Feasibility, Acceptability ... (just accepted in @jsadjournal.bsky.social) @johnshopkinssph.bsky.social @janardan.bsky.social @drjthrul.bsky.social @capraustralia.bsky.social www.jsad.com/doi/abs/10.1...
jsad.com
Text Messaging Intervention for Postpartum Alcohol Use: Micro-Randomized Trial Supports Feasibility, Acceptability, and Maternal Message Preference: Journal of Studies on Alcohol and Drugs: Vol 0, No ...
Objective: This pilot micro-randomized trial (MRT) evaluated feasibility of the MRT design and compared acceptability and preliminary impacts of drinking-focused and maternal-focused text messages to ...
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Johannes Thrul @drjthrul.bsky.social · 04/09/2025
When do people with chronic pain crave opioids or cannabis most? Our new study in DAD followed patients for 30 days using real-time surveys. 🔹 Craving ↑ on co-use days 🔹 Pain catastrophizing was strongest predictor 🔹 ~⅓ reported little/no craving authors.elsevier.com/a/1lj4z1LiD3...
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Johannes Thrul @drjthrul.bsky.social · 29/08/2025
New paper in @ecp-editor.bsky.social: Trials on cannabis for chronic pain often miss what matters most to patients: sleep, coping, function, opioid substitution. Time to look beyond pain scores. 👉 doi.org/10.1037/pha0... @dmh-bsph.bsky.social @johnshopkinssph.bsky.social
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Johannes Thrul @drjthrul.bsky.social · 14/08/2025
Recent Gallup poll numbers on drinking in America show historic lows. I spoke with @nytimes.com about potential reasons incl changes in social norms, harm perceptions, and cannabis. www.nytimes.com/2025/08/13/w... @johnshopkinssph.bsky.social @dmh-bsph.bsky.social
nytimes.com
U.S. Drinking Drops to New Low, Poll Finds
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Johannes Thrul @drjthrul.bsky.social · 04/08/2025
📢 Participants Needed! Work from home & office? Join a Johns Hopkins study on work environments & well-being. 🏷️ Earn a $120 gift card 📩 homeworkproject@jh.edu | 📱 410-575-4631 Please share widely! @johnshopkinssph.bsky.social @jhpoecenter.bsky.social
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Johannes Thrul @drjthrul.bsky.social · 23/07/2025
1/ Our new study in BMC Public Health examines stakeholder perspectives on digital wellbeing in Saudi Arabia. Findings point to high screen time, concerns about health impacts, and strong support for education-based interventions. 🧾 doi.org/10.1186/s128...
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Johannes Thrul @drjthrul.bsky.social · 21/07/2025
1/3 Had a great time at my first @researchmj.bsky.social meeting in Detroit. Fantastic science & welcoming community. Highly recommend for anyone in the cannabis research space. We shared our work using LLMs + NLP to extract structured data from EMRs.
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Johannes Thrul @drjthrul.bsky.social · 14/07/2025
1/5 New paper on medicinal cannabis: We followed adults with clinically significant anxiety & depression who were new to medicinal cannabis using 8 weeks of EMA and 6 months of longitudinal follow up and saw significant and clinically meaningful benefits. authors.elsevier.com/c/1lQBfbXYiy...
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Johannes Thrul @drjthrul.bsky.social · 09/07/2025
1/2 Cannabis researchers: We’ve developed new instruments to help standardize self-reported cannabis data. - Cannabis Use Questionnaire (CUQ) - Core Assessment Battery on Cannabis (CABC) Both are free to download (Qualtrics, REDCap): www.cannabisandhealth.org
cannabisandhealth.org
Cannabis and Health Research Initiative (CHRI)
A platform of data collection and dissemination focused on the health outcomes of therapeutic cannabis use at the patient level.
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Johannes Thrul @drjthrul.bsky.social · 21/05/2025
1/4 🚭 New from our lab in BMC Public Health! We tested 124 digital smoking cessation messages with over 300 young adults who smoke. Acceptance- and distraction-based messages were rated similarly overall, with some but key differences by sociodemographics. doi.org/10.1186/s128...
doi.org
Smoking cessation message testing to inform app-based interventions for young adults – an online experiment - BMC Public Health
Background To improve the efficacy of digital smoking cessation interventions for young adults, intervention messages need to be acceptable and appropriate for this population. The current study compa...
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Johannes Thrul @drjthrul.bsky.social · 15/05/2025
Excited to have this paper out in @apsad-dar.bsky.social: We collected EMA data on drinking in the postpartum period and found that maternal self-efficacy may be a more relevant intervention target than drinking self-efficacy.
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Reposted by Johannes Thrul
Public Health On Call Podcast @publichealthpod.bsky.social · 08/05/2025
What are Zyn nicotine pouches and how can they impact health? @meghannnn.bsky.social and @drjthrul.bsky.social explains how they work, how they’re marketed, and what we know—and don’t yet know—about their long-term health effects. Listen now: podcast.publichealth.jhu.edu/889-zyn-nico...
Promo graphic for episode 889 of Public Health On Call podcast, titled Zyn Nicotine Pouches.
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Johannes Thrul @drjthrul.bsky.social · 07/05/2025
Do you want to capture health behavior as it happens? My summer institute on EMA is coming up at the end of this month. Spots are limited - don't miss out! @johnshopkinssph.bsky.social @dmh-bsph.bsky.social
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Reposted by Johannes Thrul
Department of Mental Health @ BSPH @dmh-bsph.bsky.social · 02/05/2025
“The fact that alcohol causes cancer is not widely known in the U.S.,” says Johannes Thrul, associate professor in the Department of Mental Health. Learn more about the effort to add warning labels to alcoholic beverages. magazine.publichealth.jhu.edu/2025/why-alc...
magazine.publichealth.jhu.edu
Why Alcohol Needs a Cancer Warning Label | Hopkins Bloomberg Public Health Magazine
Less than half of Americans know that they’re increasing their cancer risk by drinking alcohol. Updated warning labels could help raise awareness.
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Johannes Thrul @drjthrul.bsky.social · 02/05/2025
1/2 📢 Most Americans don’t know that drinking alcohol causes cancer, and current warning labels aren’t addressing this issue. I spoke with Johns Hopkins Bloomberg School of Public Health Magazine about why it’s time for stronger, clearer labels that inform and protect consumers.
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Johannes Thrul @drjthrul.bsky.social · 01/05/2025
1/2 A few weeks ago Meghan Moran and I joined @publichealthpod.bsky.social to talk about ZYN oral nicotine pouches: their rise in popularity, potential health risks, and why researchers are paying close attention. 📢 Episode now live: johnshopkinssph.libsyn.com/889-zyn-nico...
johnshopkinssph.libsyn.com
Public Health On Call: 889 - Zyn Nicotine Pouches
About this episode: Zyn nicotine pouches are suddenly everywhere. What are they and how can they impact health? In this episode: A look at the popular products, what they are and how they work, how th...
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Johannes Thrul @drjthrul.bsky.social · 24/04/2025
1/2 ✨Join me at the end of May on Zoom for my Ecological Momentary Assessment (EMA) Summer Institute! Learn to design and conduct studies with real-time data collection in everyday life. Gain hands-on experience with EMA study setup. 📱🧠 🗓️ May 28-29 📍Zoom publichealth.jhu.edu/course/42016
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Johannes Thrul @drjthrul.bsky.social · 18/04/2025
1/2 New @jama.com study by @bryantshuey.bsky.social shows young women now binge drink more than men—a reversal of past trends. I spoke with @npr.org about potential reasons and why this matters for public health. 📄 Study: jamanetwork.com/journals/jam... 🎧 Interview: www.npr.org/2025/04/17/n...
npr.org
JAMA study finds young women binge drinking slightly more than men of same age
A study in JAMA says young women, age 18 to 25, are binge drinking slightly more than men the same age. The good news: Drinking is down for both young men and women compared to earlier generations.
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Johannes Thrul @drjthrul.bsky.social · 11/04/2025
1/3 Now officially published: Our re-analysis of @cjferguson1111.bsky.social's meta-analysis. Our findings suggest social media reduction or abstinence interventions can have small, but significant mental health benefits. @johnshopkinssph.bsky.social @dmh-bsph.bsky.social doi.org/10.1037/ppm0...
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Johannes Thrul @drjthrul.bsky.social · 27/03/2025
1/2 In our latest paper we find that mindfulness-based interventions 🧘‍♂️📱show promise in tackling problematic tech use (gaming, social media, smartphones). Early evidence points to improved emotional self-regulation, but robust trials are needed. authors.elsevier.com/sd/article/S...
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Johannes Thrul @drjthrul.bsky.social · 17/03/2025
This feels like a major accomplishment - after more than 7 years in a faculty position, my lab finally has a website: www.thrulresearchlab.com All credits go to my team for holding my feet to the fire and making this happen. Special thanks to Dahlia!
thrulresearchlab.com
Thrul Lab
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MedPage Today @medpagetoday.com · 31/01/2025
“The public health and cancer research community clearly has some work to do and awareness to raise," -- Johannes Thrul, PhD (@drjthrul.bsky.social), and Elizabeth A. Platz, ScD, MPH, on the link between #alcohol and cancer. www.medpagetoday.com/opinion/seco...
medpagetoday.com
Opinion | Alcohol Causes Cancer. We Should Be Drinking Less.
Labels highlighting the risk of cancer can shift behavior
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Johannes Thrul @drjthrul.bsky.social · 31/01/2025
Our latest work presents a multi-stage project to develop a digital wellbeing interventions for young people in Saudi Arabia 🇸🇦. We highlight the importance of cultural tailoring in intervention design & share key lessons learned. 🔗 doi.org/10.3389/fpsy... @johnshopkinssph.bsky.social
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Johannes Thrul @drjthrul.bsky.social · 24/01/2025
Many folks don’t know alcohol causes cancer. In @medpagetoday.bsky.social, we argue in support of cancer warning labels on alcohol proposed by the US Surgeon General to shift social norms and save lives. www.medpagetoday.com/opinion/seco... @johnshopkinssph.bsky.social
medpagetoday.com
Opinion | Alcohol Causes Cancer. We Should Be Drinking Less.
Labels highlighting the risk of cancer can shift behavior
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Johannes Thrul @drjthrul.bsky.social · 18/12/2024
How do we help young people thrive in the digital age? Our latest rapid review dives into interventions that tackle excessive screen time and promote digital well-being. Key takeaway: Combining self-regulation and education works! Read more 👉 www.jmir.org/2024/1/e59968
jmir.org
Prevention and Health Promotion Interventions for Young People in the Context of Digital Well-Being: Rapid Systematic Review
Background: Increasing digital technology and media use among young people has raised concerns about problematic use and negative consequences. The formal recognition of a technology addiction (eg, ga...
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Johannes Thrul @drjthrul.bsky.social · 25/11/2024
A few weeks ago I had an opportunity to talk about all things tobacco, nicotine, and smoking cessation with Laurel Bristow for the Health Wanted podcast. I really enjoyed the conversation - thank you so much for having me! www.wabe.org/podcasts/hea...
wabe.org
Smoking
From anti-smoking campaigns to advertisements for fruit-flavored vapes, marketing has played a huge role in how Americans interact with smoking products for over a century. This week on Health Wanted,...
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Marita Hefler @mhef.bsky.social · 12/11/2024
I’ve put together a starter pack for the growing tobacco control community here. Enjoy, and please let me know if you want to join or recommend others - i know there’s many I’ve missed! go.bsky.app/NuhMfmW
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Justin Matheson, PhD (he/they) @justinrmatheson.com · 11/11/2024
I've started a new cannabis research starter pack! It's a work in progress - please reply here or message me if you want to be added :) I know I'm missing a lot of folks here, just threw something together quickly go.bsky.app/FPKwE4w
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Katie Witkiewitz @katiew.bsky.social · 24/10/2024
Hey everyone, i created an addiction starter pack and I am sure I am missing folks - please send me a note to get added. go.bsky.app/KVDa5PD
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Omid V. Ebrahimi @omidvebrahimi.bsky.social · 24/10/2024
Starter pack for EMA, ESM, and Intensive Longitudinal Researchers. Feel free to share, follow, and nominate. Suggestions welcome! go.bsky.app/LzqJoUX #ESM #EMA #AA #IntensiveLongitudinalResearch
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Johannes Thrul @drjthrul.bsky.social · 22/10/2024
🚨 Advancing the Integration of Medicinal Cannabis in Healthcare 🚨 New publication out now with @natureportfolio.bsky.social in Nature Medicine www.nature.com/articles/s41591-024-… #Cannabis #CannabisScience #HealthcareInnovation (1/9)
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