🗣️New @ucsfchildrens.bsky.social study in Substance Use & Misuse! 📱Among 8,293 adolescents in @theabcdstudy.bsky.social , more social media time was linked to later nicotine experimentation. Addictive social media use mediated 25% of this association 🔗Learn more: tinyurl.com/smnicotine
Jason Nagata, MD
@jasonmnagata.bsky.social
Pediatrician • Adolescent Medicine • Associate Professor @UCSF • Eating Disorders, Screen Time, Social Media Research
#Eatingdisorders don't always look the way we expect. Explore muscularity-focused disordered eating and muscle dysmorphia in boys and young men with @jasonmnagata.bsky.social in this ACAMH webinar. 📅 28 January 2027 🔗 https://bit.ly/4zBt9WC EARLY BIRD ENDS 18 DECEMBER
🗣️ New @ucsfchildrens.bsky.social study in BMC Pediatrics! 🫀 Among 6,959 adolescents in the @theabcdstudy.bsky.social, binge-eating symptoms at ages 11–12 were associated with poorer cardiovascular and metabolic risk factors two years later. 🔗 Read here: tinyurl.com/BingeCVD
🗣️ New @ucsfchildrens.bsky.social study in Pediatrics! Following 11,279 adolescents over 5 years, we found: 🔄 Problematic social media use & depression may reinforce each other 👧 The link was stronger among girls 🔗 tinyurl.com/DepSM26 @ameracadpeds.bsky.social
🗣️ New @ucsfchildrens.bsky.social study in @eclinicalmed.bsky.social! In an overview of 51 systematic reviews and meta-analyses, we examined the prevalence, risk factors, health outcomes, and treatment of problematic and disordered gaming among adolescents and young adults 🔗 tinyurl.com/gamingsr26
🗣️ New @ucsfchildrens.bsky.social study in the Journal of Adolescent Health! Drought and heavy rainfall are associated with lower modern contraception use among adolescents in sub-Saharan Africa. 🔗 Read the full study: tinyurl.com/climcontra
🗣️ New @ucsfchildrens.bsky.social review in Current Pediatrics Reports! Emerging research suggests problematic patterns of GenAI use may interact with and amplify preexisting psychiatric vulnerabilities across a range of adolescent mental health outcomes. 🔗 Read: tinyurl.com/GenAIMH
Our original @addictionjournal.bsky.social Opinion & Debate sparked thoughtful responses. Our final comment looks at where we go next as #peptide markets evolve. @jasonmnagata.bsky.social @drsuzinielsen.bsky.social @ucsfchildrens.bsky.social @monashaddiction.bsky.social doi.org/10.1111/add....
Where next for human enhancement and harm reduction? From steroids to peptides
Click on the article title to read more.
doi.org
🗣️ New @ucsfchildrens.bsky.social study in NeuroImage! 🎮 Among 5,686 adolescents in @theabcdstudy.bsky.social, higher gaming time was associated with lower cortical thickness and surface area across several brain regions. 🔗 Read here: tinyurl.com/gamingCM
📱 What does the evidence show about policies to protect teens on social media? New in @jamanetworkopen.com: We reviewed 39 publications across 6 policy approaches. 🔗https://tinyurl.com/SMPolicy26
Tech companies design likes, notifications and algorithms to keep kids doomscrolling on social media, leading to potentially serious health effects. Dr. Jason Nagata explains why Meta’s $17.1 billion settlement may be a meaningful step toward making platforms safer. https://ucsfh.org/4i4ReQ5
Meta Settlement Puts Spotlight on Social Media Addiction in Kids
Jason Nagata, MD, MSc, discusses the health dangers of excessive social media use on the health of children, in response to an August 2026 announcement of a $17.1 billion settlement regarding children...
ucsfh.org
Meta just settled for $17.1 billion over concerns about children’s social media addiction. UCSF pediatrician and youth screen-time expert Jason Nagata, MD, MSc, explains what the changes could mean for kids’ health and what parents should watch for. https://ow.ly/74Nt50ZGPb3
Meta Settlement Puts Spotlight on Social Media Addiction in Kids
Jason Nagata, MD, MSc, discusses the health dangers of excessive social media use on the health of children, in response to an August 2026 announcement of a $17.1 billion settlement regarding children and teen addiction to their platform.
ow.ly
🗣️ New @ucsfchildrens.bsky.social study in @ajpcardio.bsky.social! Among a sample of adolescents in @theabcdstudy.bsky.social, greater neighborhood disadvantage was linked to lower LE8 cardiovascular health scores, driven mainly by behavioral factors. 🔗 Read here: tinyurl.com/NbhHeart
🗣️ New in the Journal of Adolescent Health! Medical infographics can help make adolescent health research easier to understand and share for teens, families, clinicians, and policymakers 🔗 Read here: tinyurl.com/JAHinfo
That toothbrush you've been side-eyeing after a cold? It's usually fine, Dr. @jasonmnagata.bsky.social says. He recommends replacing it after infections like strep throat & every 3-4 months, "or sooner if there are visible signs of wear.” https://ucsfh.org/4vSd9wV
How often to change your toothbrush
People are claiming online that toothbrushes may harbor germs capable of making you sick. Are such fears valid or overstated? Here's what to know.
usatoday.com
🗣️ New @ucsfchildrens.bsky.social study in @ajpmonline.bsky.social! 🧠Adolescents in the low-to-moderate and moderate-to-high problematic social media use trajectories had lower cognitive performance 🔗 Read here: tinyurl.com/socmind @theabcdstudy.bsky.social
FDA voted to let compounding pharmacies make BPC-157, TB-500 & other gray-market peptides despite agency scientists safety objections. Piatkowski, Ganson & @jasonmnagata.bsky.social flagged the youth-use risks in May, Lancet Child Adolesc Health. www.nytimes.com/2026/07/25/o...
Opinion | The Coming Peptide Free-for-All
Welcome to the new Wild West of peptides.
nytimes.com
🗣️ New @ucsfchildrens.bsky.social study in @annalsofepi.bsky.social! Among 10,735 adolescents in @theabcdstudy.bsky.social, we found that adolescents with increasing social media use are more likely to experience greater eating disorder symptoms. 🔗 Read here: tinyurl.com/EDTraj
🗣️ New @ucsfchildrens.bsky.social study in @jamanetworkopen.com! Among 11,286 adolescents in @theabcdstudy.bsky.social Study: ✔️ Within-person elevations in problematic social media use were associated with higher ADHD symptoms the following year during mid-adolescence 🔗 tinyurl.com/psmuadhd
🗣️ New @ucsfchildrens.bsky.social commentary in Journal of Adolescent Health! Our 8-week rotation model gives medical students exposure to adolescent health research and the chance to collaborate with interdisciplinary faculty, mentors, and peers across institutions. 🔗 tinyurl.com/AdolRes
🗣️ New @ucsfchildrens.bsky.social study in Journal of Adolescent Health! Parental allowance of: 🛌 Bedroom screen use 🎁 Screen use as a reward 🍴Mealtime screen use …was associated with higher odds of cyberbullying victimization 🔗 Read here: tinyurl.com/cybmedia @theabcdstudy.bsky.social
🗣️ New @ucsfchildrens.bsky.social study in Acta Paediatrica! 📱How parents manage devices may shape early adolescent screen use 1 year later 🔗 Read here: tinyurl.com/e5upves6 @theabcdstudy.bsky.social
As school routines disappear, screen time surges, often at the expense of sleep, exercise and real-world friendships, Dr. Jason Nagata says. To help combat overuse, he suggests introducing fun alternatives, a family media plan and modeling healthy screen use. https://ucsfh.org/4eA03hm
'Toy Story 5' gets at something very real: It's hard to keep kids off screens in summer
Kids' screen use goes way up in the summertime. And just as the movie Toy Story 5 portrays, that can be problematic for children. Here are tips for parents to help their kids manage screens and have f...
ucsfh.org
🗣️ New @ucsfchildrens.bsky.social study in Academic Pediatrics! Cyberbullying trajectories → poorer academic outcomes in adolescents in @theabcdstudy.bsky.social 🔗 Read here: tinyurl.com/yc3pmw4x @ucsfhealth.bsky.social
🗣️New @ucsfchildrens.bsky.social study in Pediatric Research! Each additional hour spent on: 📺 TV/videos 🎮 Video games 📱 Social media …was linked to a higher likelihood of poor diet quality (e.g., less fiber intake and more added sugar intake) 🔗 Read here: rdcu.be/fn2Tj @socpedresearch.bsky.social
🗣️ New viewpoint in @jama.com led by @piatkowskitim.bsky.social! 💉 Illicit injectable peptides are increasingly promoted online for enhancement, raising concerns about youth exposure, limited safety evidence, and regulatory gaps. 🔗 Read here: tinyurl.com/jamapeptides
More than 1/2 of U.S. teens use their phones after midnight instead of sleeping, a study finds. Regular late-night phone use "can interfere with the sleep they need to learn and perform at their best at school the next day,” Dr. @jasonmnagata.bsky.social tells @people.com. https://ucsfh.org/4tWs1cC
More Than Half of U.S. Teens Are Losing Critical Sleep Due to Smartphone Use After Midnight
More than half of U.S. adolescents are losing crucial sleep to smartphone use between the hours of 12:00 a.m. and 4:00 a.m., according to a new study. Participants in the study were most likely to use...
ucsfh.org
🗣️New @ucsfchildrens.bsky.social study in The American Journal of Psychiatry! 📱Longitudinal research shows that early-onset, rapid increasing social media use may be associated with future substance experimentation. 🔗 To learn more, visit: tinyurl.com/fdwwu9tm
Adolescents in a national cohort used smartphones an average of 50 minutes on school nights, mostly for social media, with about half using devices during midnight hours, raising concerns for sleep disruption. @jasonmnagata.bsky.social ja.ma/42EVg8X
📣 New @ucsfchildrens.bsky.social study in @jamapediatrics.com! 📱Adolescents spent an average of 50 minutes using a smartphone during school nights 🔗 Read here: tinyurl.com/sep3rnw4