
ScienceA new analysis links estrogen-only menopausal hormone therapy with fewer clinical and pathological signs of Alzheimer’s disease, but its retrospective design means it cannot establish prevention or guide treatment on its own.

AIA new gene-network modelling study expands the map of schizophrenia-associated genes, but its main value lies in prioritising biological questions rather than delivering a diagnostic test or immediate treatment.

SocietyPresident Donald Trump’s August 10 executive order seeks to reshape U.S. childhood vaccine policy by promoting separate MMR shots and wider spacing between immunisation visits, setting up a new clash over science, regulation and federal authority.

ScienceMicrogravity does not stop astronauts from swallowing, but it can alter the sensory, physiological and practical conditions that make eating and drinking reliable over long missions.

ScienceA major UK-based analysis finds that the subjective experience of loneliness may have broader health consequences than the number of social contacts alone, while underscoring that neither measure tells the whole causal story.