Nobel Medicine: The 2026 Nobel Prize in Physiology or Medicine goes to Karl Deisseroth (US) and Peter Hegemann and Georg Nagel (Germany) for optogenetics—using light to switch specific nerve cells on and off—opening new ways to map brain circuits tied to memory, feelings and disease. Reproductive Health: A new JAMA trial from Karolinska Institute researchers suggests IUD insertion can be made much less painful with a small amount of local anesthetic delivered through a catheter into the uterus, cutting average pain scores versus saline. Cancer Care (Brain Mets): Experts debate how to define “high-risk” in EGFR-mutated lung cancer with brain metastases and when to defer local therapy, weighing treatment activity against risks like radiation necrosis. Infection Treatment: A Swedish retrospective study in ESBL bloodstream infections finds starting effective antibiotics after 24 hours wasn’t linked to higher 30-day mortality, challenging assumptions about strict delays. Sweden Health Leadership: The Swedish Society of Medicine’s Hippocrates Prize goes to Märit Halmin for sustained commitment to people’s right to healthcare, including crisis work in Gaza and beyond.