New research shows that buying second-hand gifts is typically a thoughtful, intentional decision rather than an impulsive one ...

Breast cancer can rapidly derail the brain’s day-night regulation of stress hormones, even before tumors are detectable.

Physical exercise triggers extracellular vesicles (EVs)—tiny particles in the blood—to act as temporary transport shuttles for key hormone precursors.

Neurons can rapidly rebalance their communication using a structural signal rather than electrical activity, overturning long-held assumptions about how synapses maintain stability.

New research reveals that when gut bacteria closely resemble the myelin sheath that protects nerve fibers, the immune system can become confused and attack both — accelerating multiple sclerosis.