For generations, medicine has understood high blood pressure as a problem of nerves and hormones — a body running too fast, holding too much. Now, researchers from Australia and Singapore have identified a third force at work: the immune system's failure to stand down. Their discovery, centered on the body's own inflammation-resolution pathways, suggests that hypertension is not merely a pressure problem but a healing problem — and that the damage left behind may, one day, be undone.