A 2026 Clinical Epigenetics study tracked DNA methylation biological age in 894 older adults and found that each 1-SD higher biological-age slope predicted 17-28% higher all-cause mortality risk across 5 epigenetic clocks.1 The clocks moved more slowly than calendar time over 8.1 years, but participants with higher methylation-age slopes had worse survival than participants with …
A 2026 quantitative MRI preprint reanalyzed 138 healthy adults and found that multivariate modeling detected coordinated age-related shifts across myelin-sensitive, iron-sensitive, and water-sensitive brain maps.1 The signal was broad, but split-half validation weakened the result enough to keep it in the measurement-method lane rather than the clinical-test lane. Research Highlights 138 adults were reanalyzed: The …
A 2026 NF1 mouse-model study found a gut-brain signal that was strongest in males: Nf1 +/- mice had altered gut microbiome composition, higher relative brain mass in 2 cohorts, reduced sociability, and combined autism-like phenotype shifts, with male microbiome beta diversity differing from controls at p = 0.0120.1 The result is a preclinical mechanism lead, …
A 2026 review ties the Parkinson’s disease genes PINK1 and parkin to damaged-mitochondria cleanup, from damage sensing and ubiquitin tagging to autophagy recruitment and lysosomal degradation.1 That shifts “mitochondrial dysfunction” into specific failure points: tagging, extraction, transport, autophagosome recruitment, and degradation. Research Highlights 18 PARK loci frame inherited risk: PARK2 encodes parkin and PARK6 encodes …
A 2026 rat study found that foot-shock stress transiently reduced food-cue approach during the first 2 conditioned-stimulus trials (t = 2.807; P < 0.05), and inhibiting the nucleus of the solitary tract weakened that stress effect.1 The useful finding is selective: stress used an NTS-linked route to dampen cue-evoked VTA dopamine, while outcome-specific satiety reduced ...
A 35-person EEG study found that pain empathy did not collapse when live two-way video was replaced by prerecorded viewing: observer-target pain-rating correlations were nearly identical during video calls and recordings, r = 0.65 vs. r = 0.64, both p < 0.001.1 The calibrated read is narrow but useful: temporal immediacy was not required for …
Restless legs syndrome (RLS), now also called Willis-Ekbom disease (WED), is a sleep-disrupting neurologic disorder that affects roughly 20–30% of pregnancies in some series and is linked to preeclampsia, increased cesarean delivery, and perinatal depression. A 2026 Nature and Science of Sleep synthesis turned 9 source documents into 27 practice recommendations across 5 domains, ending …