Mar 20, 2026NeuroscienceCannabis, Tobacco, and Brain Volume: What the Data ShowA large meta-analysis links cannabis to smaller amygdala volume and tobacco to broader brain-volume differences—but causation and co-use remain unsettled.cannabistobacconeuroimagingamygdalaRead article →
Mar 18, 2026Mental HealthHow Hormones May Shape Fear Learning—and What the Pill ChangesEstradiol, progesterone, and oral contraceptives may shape fear learning. What human studies say about PTSD risk, safety memory, and uncertainty.ptsdestradiolfear extinctionoral contraceptivesRead article →