Detoxing Alzheimer’s brains keeps cognitive deficits at bay: “Applying a treatment for hydrocephalus to Alzheimer’s disease, the microns-wide shunt, or catheter, is placed subcutaneously in a space at the base of the cerebellum. It runs under the skin to the peritoneum, a space in the belly where body fluids accumulate before flowing to the kidney to be filtered and eventually eliminated in the urine. The shunt is put in once, drains continuously, and is cleaned out periodically by a neurologist.”