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Arguments in landmark social media addiction trial against Meta, YouTube begin in Los Angeles

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Meta, YouTube Face Social Media Addiction Trial in LA

Key Takeaways

Meta and YouTube face their first jury trial alleging deliberate product design to addict young users for profit, with opening arguments underway in Los Angeles County Superior Court this week.
The lawsuit claims platforms embedded specific addictive features borrowed from gambling and tobacco industries into Instagram and YouTube to create 'self-destructive feedback loops' that harmed the 19-year-old plaintiff's mental health.
Plaintiffs are strategically arguing deliberate harm through product design rather than user-generated content to bypass First Amendment protections and Section 230 liability shields that typically protect tech companies.
The case is structured as a bellwether trial that will shape hundreds of similar lawsuits and draws explicit parallels to landmark 1990s tobacco litigation, with Meta CEO Mark Zuckerberg expected to testify during the six-to-eight-week trial.

DT Editorial Team·Feb 23, 2026·5 min read·via fastcompany.com

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At the Meta and YouTube trial, plaintiff's lawyer says social media is 'addicting the brains of children'

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Meta and YouTube Trial: Social Media Addiction in Children

Key Takeaways

Meta and YouTube face a landmark trial alleging they deliberately engineered addictive features targeting children, with plaintiff attorneys drawing parallels to historic tobacco litigation and framing the case around intentionally 'addicting the brains of children.'
Internal company documents presented as evidence reveal that both Meta and Google understood the addictive potential of their platforms, with communications comparing features to casino mechanics and employees describing Instagram as functioning 'like a drug.'
Meta's internal 'Project Myst' study allegedly identified children experiencing trauma and stress as particularly vulnerable to addictive usage patterns while finding that parental monitoring tools were largely ineffective, demonstrating corporate knowledge of risks to susceptible youth.

DT Editorial Team·Feb 22, 2026·5 min read·via fastcompany.com

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Molecule Drives Melanoma Growth and Immune Evasion

Key Takeaways

Researchers at NYU Langone Health identified HOXD13, a transcription factor that drives melanoma progression through two mechanisms: promoting angiogenesis (blood vessel formation) to fuel tumor growth and suppressing immune system recognition of cancer cells.
HOXD13's dual functionality—simultaneously enabling tumor expansion while dampening T cell surveillance—explains why melanomas with high HOXD13 activity are particularly aggressive and treatment-resistant.
Melanomas express varying HOXD13 levels, suggesting that tumors with elevated HOXD13 activity represent a dangerous subset that may require more intensive or targeted therapeutic strategies than standard treatment protocols.

DT Editorial Team·Feb 22, 2026·4 min read·via medicalxpress.com

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Depression & Skin Disease: Shared Immune Link Found

Key Takeaways

Researchers at Mount Sinai discovered that major depressive disorder and inflammatory skin diseases share dysregulated immune pathways, particularly abnormalities in the Th2 immune pathway, suggesting depression may have an inflammatory immune component previously overlooked.
The finding bridges psychiatry and dermatology by revealing that dermatological treatments successfully targeting the Th2 pathway in skin conditions could potentially be repurposed to treat depression, offering a new translational medicine approach.
The immune system communicates with the nervous system through chemical messengers that can cross the blood-brain barrier, meaning inflammatory molecules from activated immune cells may directly influence mood regulation and emotional processing in depression patients.

DT Editorial Team·Feb 22, 2026·4 min read·via medicalxpress.com

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Social Support & Mental Health Care: A Complex Relationship

Key Takeaways

Research by Thijs Beckers challenges the traditional linear model of mental health care, revealing that social support acts as a double-edged sword that complexly influences whether individuals seek treatment and how they navigate recovery.
Social networks can both facilitate and inhibit mental health care utilization at different stages of illness—the same support that encourages crisis intervention may later discourage continued treatment during recovery phases.
Personal relationships and community connections play a significant mediating role throughout the entire mental health treatment journey, suggesting that care models must account for how social factors influence care-seeking behavior beyond just symptom severity.

DT Editorial Team·Feb 22, 2026·4 min read·via medicalxpress.com

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Brain Signals, Rewards & Goals: Depression Research

Key Takeaways

Researchers have identified 'Reward Positivity,' a distinctive electrical brain signal that appears 200-500 milliseconds after receiving a reward, providing precise insight into how the brain processes immediate positive feedback.
This neural marker is highly specific to reward processing alone, allowing scientists to isolate and study the mechanisms of immediate gratification separately from other cognitive and emotional processes occurring in the brain.
Understanding how the brain distinguishes between immediate desires and long-term goals through Reward Positivity has significant implications for comprehending psychiatric conditions like depression and issues related to impulse control.
The research reveals a fundamental neural mechanism underlying human motivation and decision-making, with potential applications for treating mental health conditions that involve disrupted reward processing or goal-directed behavior.

DT Editorial Team·Feb 22, 2026·4 min read·via medicalxpress.com

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Digital Twin Reveals AMD Cell Deterioration Breakthrough

Key Takeaways

Researchers at the NIH have created a digital twin of retinal cells to understand age-related macular degeneration (AMD), a leading cause of blindness, by modeling how cellular organization breaks down during disease progression.
The computational platform overcomes limitations of traditional lab methods by simulating the complex three-dimensional structure of retinal tissue and allowing researchers to observe disease mechanisms that are difficult to study physically.
Digital twin technology accelerates drug discovery by enabling scientists to test potential therapeutic interventions virtually before conducting animal studies or clinical trials, reducing time and resources spent on ineffective approaches.
The model can simulate various disease states and environmental conditions to identify which cellular factors are most critical for maintaining healthy vision and which changes directly contribute to AMD progression.

DT Editorial Team·Feb 22, 2026·4 min read·via medicalxpress.com

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Brain Tumor Recurrence: New Prediction Method

Key Takeaways

Meningiomas are the most common primary brain tumors in adults, and despite being classified as benign, they cause significant harm by compressing brain tissue and triggering debilitating symptoms like headaches, cognitive decline, and motor dysfunction.
Researchers have developed new predictive methods to identify which meningiomas are at high risk for recurrence, enabling more personalized treatment strategies and surveillance protocols rather than one-size-fits-all approaches.
Accurate recurrence prediction could optimize clinical decision-making by reducing unnecessary treatments for low-risk patients while ensuring high-risk patients receive intensive monitoring and appropriate adjuvant therapies like radiation.

DT Editorial Team·Feb 22, 2026·3 min read·via medicalxpress.com

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Airborne Toxins Trigger Chronic Sinus Disease in Veterans

Key Takeaways

Researchers at UC San Diego and VA San Diego have identified a distinctive biological signature of chronic rhinosinusitis (CRS) in veterans exposed to military burn pit smoke and wildfire emissions, revealing a unique inflammatory pathway different from conventional sinus disease.
Military personnel exposed to burn pit combustion byproducts—including heavy metals and volatile organic compounds—develop a specialized immune response that triggers this toxin-induced CRS variant, which appears concentrated among service members rather than the general population.
The newly recognized disease profile may explain why standard CRS treatments prove less effective for affected veterans, suggesting clinicians need tailored diagnostic and treatment approaches for this occupational exposure-related condition.

DT Editorial Team·Feb 22, 2026·4 min read·via medicalxpress.com

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Anti-Seizure Drug Prevents Alzheimer's Plaques: Study

Key Takeaways

Northwestern University researchers identified an FDA-approved anti-seizure drug that can prevent toxic protein accumulation in the brain, addressing a key hallmark of Alzheimer's disease at its source rather than attempting to clear proteins after they've already built up.
The study mapped the precise timing and location of harmful protein fragment emergence in Alzheimer's-affected brains, revealing a critical intervention window before the pathological cascade initiates and suggesting prevention is more effective than post-accumulation treatment.
The therapeutic candidate is an existing medication with decades of safe clinical use for epilepsy, potentially accelerating the path to patient treatment by bypassing years of safety testing and regulatory approval typically required for novel compounds.

DT Editorial Team·Feb 22, 2026·4 min read·via medicalxpress.com

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Air Pollution Linked to Lost Mobility & Disability

Key Takeaways

University of Michigan researchers discovered a direct link between residential air pollution exposure and declining physical mobility in aging populations, revealing that environmental factors play a modifiable role in disability progression rather than viewing mobility loss as inevitable aging.
The study used precise geographic mapping of air quality measurements paired with participants' home addresses to track pollution exposure over extended periods, moving beyond previous research that focused primarily on acute respiratory effects to examine how chronic airborne contaminants affect musculoskeletal function.
Elevated air pollutant levels were associated with not only accelerated mobility decline but also reduced capacity for physical recovery once lost, suggesting pollution exposure hinders the body's ability to regain function and carries substantial implications for disability trajectories in older adults.
Public health advocates should expand their focus beyond pollution's well-documented respiratory effects to include functional disability outcomes, particularly for older populations managing multiple chronic conditions where air pollution represents an additional health burden.

DT Editorial Team·Feb 22, 2026·4 min read·via medicalxpress.com

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Global Palliative Care Gap for Children Revealed

Key Takeaways

A Lancet study reveals that approximately 10.6 million children worldwide experience serious health-related suffering but lack access to palliative care, with the crisis disproportionately affecting low- and middle-income countries where infrastructure remains inadequate.
Palliative care extends beyond end-of-life treatment to encompass pain management, emotional support, and quality-of-life improvements for children with life-limiting and chronic debilitating conditions, yet many children receive minimal intervention.
Systemic barriers in developing nations—including limited resources, inadequate healthcare provider training, pharmaceutical shortages, and competing healthcare priorities—prevent the establishment of comprehensive palliative care programs, creating a stark equity divide based on geography and economic status.

DT Editorial Team·Feb 22, 2026·4 min read·via medicalxpress.com

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New Biosensor Technology Improves Glucose Monitoring

Key Takeaways

Washington State University has developed a wearable biosensor using microneedle technology that measures glucose in interstitial fluid with superior accuracy and comfort compared to conventional continuous glucose monitoring systems.
The device transmits real-time glucose data wirelessly to smartphones, enabling patients to make immediate adjustments to diet, medication, and activity rather than relying on delayed information.
Ultra-fine microneedles penetrate only outer skin layers, significantly reducing discomfort and potentially improving patient compliance for those requiring multiple daily glucose checks.
The biosensor demonstrates exceptional accuracy across the physiological glucose range relevant to diabetes management, a critical requirement for clinical adoption and patient safety.

DT Editorial Team·Feb 22, 2026·4 min read·via medicalxpress.com

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AI & Optical Imaging Detect Coronary Artery Plaques

Key Takeaways

Researchers have developed an AI system that uses optical coherence tomography (OCT) imaging to identify lipid-rich plaques in coronary arteries, offering a breakthrough tool for detecting dangerous lesions before they cause heart attacks.
Lipid-rich plaques are particularly dangerous because they rupture easily and cause acute myocardial infarction, yet traditional angiography cannot characterize their internal composition—a critical diagnostic gap the new AI system addresses.
OCT imaging provides superior micrometer-level resolution compared to conventional X-ray angiography, but generates hundreds of frames per scan that are time-consuming for manual analysis; machine learning algorithms now automate this interpretation with high accuracy.
The AI platform rapidly processes entire OCT datasets to identify subtle visual patterns and morphological features associated with plaque vulnerability, reducing diagnostic variability and interpretive burden on cardiologists.

DT Editorial Team·Feb 22, 2026·4 min read·via medicalxpress.com

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Traumatic Brain Injury & Work Disability Risk

Key Takeaways

A Neurology study found that traumatic brain injury survivors across all severity levels—from mild concussions to severe cases—face substantially elevated work disability risks extending up to five years post-injury, challenging the conventional focus on severe cases only.
The five-year follow-up period revealed that workers who appeared to recover adequately during early rehabilitation phases continued experiencing persistent employment barriers years later, highlighting the need for extended support beyond acute recovery phases.
Mild traumatic brain injuries produced disability qualification rates comparable to moderate and severe injuries, suggesting that post-concussion symptoms like cognitive difficulties, headaches, and mood changes accumulate to significantly impair workplace function despite minimal structural brain damage on imaging.

DT Editorial Team·Feb 22, 2026·4 min read·via medicalxpress.com

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Alzheimer's Molecular Map Reveals Metabolic Clues

Key Takeaways

Rice University researchers developed the first comprehensive, label-free molecular atlas of Alzheimer's-affected brain tissue, using innovative imaging that eliminates the need for fluorescent tags or radioactive markers and reveals biological processes in their natural state.
The molecular mapping identified specific metabolic pathways showing abnormal activity patterns in diseased brains, revealing that Alzheimer's involves far more complex biochemical disruptions than previously understood.
These metabolic discoveries point to new therapeutic intervention points, potentially enabling the development of treatments designed to restore normal biochemical function and interrupt disease progression in affected brain regions.
The research underscores the urgency of Alzheimer's research, as the disease claims more lives annually than breast cancer and prostate cancer combined, making breakthrough discoveries critical for earlier detection and more effective interventions.

DT Editorial Team·Feb 22, 2026·4 min read·via medicalxpress.com

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Researchers Solve Adenoviral Vaccine Blood Clot Mystery

Key Takeaways

Researchers from McMaster, Flinders, and Greifswald universities identified the cause of vaccine-induced thrombotic thrombocytopenia (VITT): the immune system mistakenly attacks blood platelets and clotting factors instead of the adenoviral vaccine vector.
The condition affects only a small subset of individuals with specific genetic or immunological predispositions, suggesting that susceptibility to this rare complication depends on individual immune system characteristics rather than the vaccine itself.
Understanding this immune misdirection mechanism is critical for improving future vaccine design, managing affected patients, and predicting similar risks with upcoming immunizations while maintaining confidence in life-saving vaccines.

DT Editorial Team·Feb 22, 2026·4 min read·via medicalxpress.com

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Maternal Mortality: Beyond Pregnancy Complications

Key Takeaways

A Columbia University study analyzing death certificates from 2018-2023 found that drug overdose, homicide, and suicide—not pregnancy complications—are the leading causes of death among pregnant and postpartum women, fundamentally challenging conventional maternal mortality narratives.
The opioid epidemic and substance misuse pose particular threats to pregnant women due to altered drug metabolism, inadequate pain management, and limited access to addiction treatment, revealing a critical gap in current public health prevention strategies.
Violence and mental health crises, including intimate partner violence and postpartum psychological vulnerability, must be recognized as core maternal health issues rather than peripheral concerns, requiring integrated support systems beyond traditional clinical care.

DT Editorial Team·Feb 22, 2026·4 min read·via medicalxpress.com

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Childhood Obesity Causes Early Vascular Damage

Key Takeaways

Brazilian researchers have demonstrated that childhood obesity alone can trigger measurable arterial damage in children as young as six years old, independent of other metabolic complications, fundamentally shifting understanding of when cardiovascular disease begins to develop.
Obesity causes direct damage to endothelial cells lining blood vessels through chronic inflammation and oxidative stress, creating conditions for plaque accumulation and arterial stiffening even in children without obvious metabolic abnormalities.
Early vascular injury in childhood establishes a cumulative risk trajectory, where children who experience arterial damage and continue struggling with weight management face substantially accelerated atherosclerosis progression into adulthood.
The study's findings suggest that the window for cardiovascular disease prevention is far narrower than previously understood, making early childhood a critical period for vascular health assessment and intervention rather than waiting until middle age.

DT Editorial Team·Feb 22, 2026·4 min read·via medicalxpress.com

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Uterine Gland Genes & Infertility: New Research

Key Takeaways

Despite advances in assisted reproduction, embryo transfer success rates remain around 50%, with 30-35% of transfers failing due to implantation issues rather than embryo quality, suggesting the uterine environment is a critical factor in fertility outcomes.
Recent research is shifting focus from embryo selection alone to understanding uterine gland cell genetics, which produce essential biochemical signals and proteins necessary for successful embryo implantation in the uterine lining.
Scientists are identifying specific genes that activate during the implantation window—a narrow timeframe days after ovulation—when uterine gland cells orchestrate molecular signals that prepare the uterus to accept an embryo.

DT Editorial Team·Feb 22, 2026·4 min read·via medicalxpress.com

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