AdvertisementBrain's Link To Immune System Might Help Explain Alzheimer'sOctober 03, 2017Jon HamiltonfacebookEmailAlzheimer's disease causes atrophy of brain tissue. The discovery that lymph vessels near the brain's surface help remove waste suggests glitches in the lymph system might be involved in Alzheimer's and a variety of other brain diseases. (Alfred Pasieka/Science Source)