Nearly half of Americans with kidney failure who are referred for transplantation never begin the process required to be considered for a new organ, a new study shows, while less than a fifth actually complete the assessment and get on the waitlist.

A natural quasi-experiment in Suba, Bogotá, found that more stringent COVID-19 mobility restrictions were associated with larger reductions in PM₁₀ and PM₂.₅ air pollution. The findings suggest targeted traffic and emissions controls could improve urban air quality, although ozone responses were more complex, and the results may not generalize beyond this high-traffic district.

Google’s AMIE research AI matched primary care physicians overall in simulated, multi-visit disease-management reasoning and scored higher on several measures of plan appropriateness, treatment precision, investigation precision, and guideline alignment. The study highlights the promise of conversational AI for longitudinal care, while emphasizing that AMIE is not ready for clinical use and still needs prospective real-world testing.

A 28-day wearable-sensor study of 26 healthy naturally menstruating women found that active energy expenditure varied across the menstrual cycle and was higher in the early follicular phase than the late follicular phase.

Synthetic microbial communities give researchers controlled models for testing how diet reshapes gut microbial ecology, metabolism, and host-relevant responses. The review highlights how SynComs can strengthen causal inference, improve intervention testing, and support future precision nutrition, while noting major challenges in stability, standardization, and ecological realism.

A new Review reveals how aging can push the immune system into a paradoxical state, weaker against threats yet more prone to attacking the body’s own tissues.

Panelists at HLTH Europe 2026 warned that clinicians and patients are increasingly deferring to algorithmic outputs over independent judgment.
Medscape News Europe

40% of U.S. children 6–19 are nearsighted. 50% of the world projected myopic by 2050. Here's the evidence-based intervention every parent and pediatrician needs to know.

SLEEP 2026 Annual Meeting in Baltimore June 14–17 produced new research on insomnia's cardiovascular risk, shift work, digital CBT-I, and home sleep diagnostics. Here's the clinical summary.

Leibniz Institute / Nature Communications April 2026: phosphatidylcholine decline triggers mitochondrial fragmentation during aging. Restoring it reversed aging in worms in 2 days.