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More data, more answers? A 1.9 million-person health study shows why scale has limits

Researchers analyzed phenotypic and linked health-record data from more than 1.9 million adults in Our Future Health, comparing demographic characteristics, disease patterns, clinical associations, and rare-condition case counts with national data and other major cohorts. The cohort's size provides unusually large samples for many common and less common conditions, although its demographic composition and current data sources require careful consideration when interpreting population-level estimates.

14 Sep 2026

APOE genotype helps p-tau217 predict who may develop cognitive impairment sooner

A pooled analysis of 8,582 adults from seven prospective cohorts found that higher plasma p-tau217 concentrations were associated with greater cognitive impairment risk and earlier progression, with stronger associations among APOE-ε4 carriers. Each 1-SD increase in p-tau217 was associated with a 24% shorter time to cognitive impairment among carriers compared with 13% among non-carriers, suggesting that genetic background can refine the prognostic meaning of this Alzheimer’s disease blood biomarker.

14 Sep 2026

A study of ayahuasca users found a mental health pattern researchers cannot yet explain

In a cross-sectional study of 808 Brazilian adults planning to attend ayahuasca ceremonies, greater prior experience with the brew was associated with lower depression, anxiety, and stress scores, as well as higher spiritual well-being and stronger metaphysical beliefs. Because the study was observational and relied on self-reported data, it cannot show that ayahuasca caused these differences.

13 Sep 2026

Cockroaches have a reputation for surviving almost anything, but this diet proved deadly

A laboratory study tested how ultra-processed, unprocessed, and mixed diets affected survival in 127 lobster cockroaches, Nauphoeta cinerea. Cockroaches fed only ultra-processed foods had higher mortality than those given unprocessed or mixed diets, although the study could not determine whether processing, ingredients, nutrition, or differences in food intake caused the effect.

13 Sep 2026

Neoadjuvant atezolizumab addition quadruples pathological responses in resectable lung tumors

Patients with resectable stage II–IIIB non-small cell lung cancer (NSCLC) treated with perioperative atezolizumab plus platinum-based chemotherapy experienced a median event-free survival of 62.8 months compared with 34.9 months for patients receiving chemotherapy alone, according to final results from the Phase 3 IMpower030 trial.

12 Sep 2026

Rare cortical neurons actively promote the transition into sleep

What makes the brain fall asleep? For nearly a century, scientists have looked to structures deep within the brain for the answer.

11 Sep 2026

New dendritic constrictions reveal hidden complexity in neuronal signaling

Neurons receive thousands of signals via tree-like extensions called dendrites. Until now, these dendrites were thought to be relatively smooth cables that conduct electrical signals to the cell body.

11 Sep 2026

Video game offers new insights into autistic perception

People with autism often come at life from a different angle-seeing details others miss, focusing on patterns rather than faces, experiencing heightened or dimmed physical sensations.

11 Sep 2026

Targeted nanoparticles strengthen anti-cancer immune responses in tumors

Adelaide University researchers have developed a new way of using mRNA technology to reprogram tumor-supporting immune cells and strengthen the body's anti-cancer immune response.

11 Sep 2026

Obesity suppresses natural protection against breast cancer growth

A research team at Huntsman Cancer Institute at the University of Utah (the U) has found that obesity prevents a biological process that kills cancerous cells, revealing a possible reason why obesity is a risk factor for breast cancer.

11 Sep 2026

Lupus-linked genetic variants may boost antiviral immunity

Why do genetic variants that increase the risk of autoimmune disease remain so common in the population?

11 Sep 2026

Study links heritability and polygenicity across complex human traits

Researchers at the University of Oslo have mapped which parts of our DNA carry the inherited differences behind complex traits and disorders.

11 Sep 2026

Scientists discover tiny protein region that shapes tooth enamel

Tooth enamel looks simple from the outside and consists of a hard, smooth surface built to withstand years of wear.

11 Sep 2026

Nanoparticle platform reliably detects true cases of antibiotic allergy

A multidisciplinary scientific team at the University of Malaga has developed a new technology based on magnetic nanoparticles that enables precise, rapid and reliable diagnosis of allergy to beta-lactam antibiotics, including amoxicillin and other penicillins.

11 Sep 2026

Study shows mRNA vaccines trigger more diverse flu antibody responses

Influenza remains a major global health challenge as continual antigenic drift can limit the breadth and durability of vaccine-induced antibody responses, requiring frequent vaccine updates.

11 Sep 2026

Proteomic signatures reveal early signs of cardiovascular-kidney-metabolic disease in children

Researchers at Vanderbilt Health, UTHealth Houston and the University of North Carolina at Chapel Hill have identified early signs of cardiovascular-kidney-metabolic disease (CKMD) in children as young as 8 years old that potentially can be reversed with a new class of weight loss drugs used widely by adults

11 Sep 2026