Summary: A team of researchers at the University of California, San Francisco (UCSF) has produced the most detailed molecular and cellular map to date of the maternal–fetal interface—the transient, essential boundary where a pregnant woman’s uterus and the developing placenta meet. By applying advanced single-cell and spatial profiling techniques to more than 1.2 million cells, … Read more

Summary: Cortisol, commonly called the “stress hormone,” usually falls to its lowest level around midnight so the body can rest and repair. New research, however, shows that nurses working double shifts experience an alarming reversal of this pattern: their midnight cortisol levels are dramatically elevated, signaling an ongoing state of physiological stress when the body … Read more

Summary: For decades, researchers have observed that the tau protein behaves like a spreading fire in the brain—moving between regions and causing progressive cognitive decline. A new decade-long study has now mapped how that spread happens, identifying the neuronal pathways that guide tau’s movement and pointing to actionable targets for therapies. By combining functional MRI … Read more

Summary: Could a hopeful outlook on life help protect your brain? A large new study indicates that optimism may act as a meaningful psychosocial asset for healthier cognitive aging. Researchers examined data from more than 9,000 older adults in the nationally representative Health and Retirement Study (HRS). Over up to 14 years of follow-up, higher … Read more

Summary: Despite their varied chemical structures and diverse origins—from synthesized LSD to traditional ayahuasca—major psychedelic compounds share a single, consistent pattern of brain activity. An international mega-analysis combined data from 11 datasets across five countries to uncover why chemically different psychedelics produce similar therapeutic and hallucinogenic effects. The research shows that psychedelics reorganize brain function … Read more

Summary: Can fear alone—without direct physical harm or radiation exposure—damage an unborn child? A large study of about 1.1 million births following the 2011 Fukushima nuclear accident finds that it can. By isolating maternal anxiety using a novel Google Trends–based measure, researchers linked widespread radiation fear to substantial rises in preterm births and lower birth … Read more

Summary: Inflammation is a vital defense mechanism, but when it remains chronically activated it can drive a wide range of diseases, from sepsis to neurodegenerative disorders. A comprehensive review highlights the receptor TREM-1 (Triggering Receptor Expressed on Myeloid cells-1) as a central amplifier of harmful immune responses and an attractive therapeutic target. TREM-1 is expressed … Read more

Summary: A heartfelt, tearful post about climate change may help you find like-minded people, but new research shows it often turns off a broader audience. People tend to view emotional political posts online with skepticism, seeing them as less genuine and less persuasive than calm, factual messages. Across six experiments involving nearly 6,400 participants, researchers … Read more

Summary: For children with attention deficit hyperactivity disorder (ADHD), ordinary aerobic activity alone may not be enough. A multicenter randomized clinical trial shows that integrated cognitive-motor exercise — movement combined with real-time cognitive demands and rule following — is substantially more effective than standard aerobic exercise at improving executive function while also reducing core ADHD … Read more

Summary: When people face an ethical dilemma, do they favor the greatest overall good or the fairest distribution? New neuroimaging evidence indicates that fairness frequently wins out. A laboratory study using an “icy water” harm-allocation task found that participants preferred to spread discomfort across multiple people rather than concentrate it on a single individual, even … Read more