EXPLORE THE SCIENCE
TL;DR: A 2026 systematic review and meta-analysis in Journal of Alzheimer’s Disease found that choroid plexus volume, an MRI-visible structure involved in cerebrospinal-fluid regulation and immune signaling, was larger in Alzheimer’s disease than in healthy co…
Read article
TL;DR: A 2026 mouse study in Nature found that age-related gut microbiome changes impaired vagal gut-brain signaling and hippocampal memory encoding, while several interventions restored memory performance in aged or microbiome-aged mice. Key Findings Aged mic…
Read article
TL;DR: A 2026 mouse study in Alcohol: Clinical and Experimental Research found that chronic intermittent ethanol plus repeated forced-swim stress left mice drinking more alcohol months later and impaired reversal learning in midlife, alongside locus coeruleus…
Read article
TL;DR: A 2026 open-label study in Communications Medicine found that Bacillus Calmette-Guerin (BCG) immunotherapy changed cerebrospinal-fluid immune-cell responses and Alzheimer-related biomarkers in 23 older adults. Key Findings Small trial context: 2 related…
Read article
TL;DR: A 2026 cohort study in PLOS One found that higher fasting plasma vitamin C levels were independently associated with larger MRI-measured gray matter and stronger default mode network (DMN) structural connectivity in 2,044 older adults, but the cross-sec…
Read article
TL;DR: A 2026 randomized trial in International Journal of Clinical and Health Psychology found that older adults who knowingly took placebo pills for 3 weeks reported lower stress and performed better on Digit Span than controls. Key Findings Aging trial cont…
Read article
TL;DR: A 2026 review in Translational Neuroscience summarizes why PINK1 and parkin, two genes linked to early-onset parkinsonism, keep pointing researchers back to mitophagy and autophagy as Parkinson disease mechanisms. Key Findings 18 PARK loci noted: The re…
Read article
TL;DR: A 2026 study in Nature Metabolism identified brain hyperglycosylation as a metabolic driver of Alzheimer disease in human tissue and mouse models, while glucosamine exposure was linked to worse outcomes in Alzheimer-related dementia records. Key Finding…
Read article
TL;DR: A 2026 preprint in medRxiv found that brain-derived p-tau217%, a blood marker designed to isolate central nervous system tau, classified Alzheimer disease pathology better than standard plasma p-tau217 in several Alzheimer cohorts. Key Findings CNS-sele…
Read article
TL;DR: A 2025 study in Neurology used a Kaiser Permanente target-trial emulation and found that starting a statin was not linked to higher or lower Alzheimer disease or related dementia incidence after the first year. The first-year diagnosis increase likely r…
Read article