Billy Joel’s diagnosis of normal pressure hydrocephalus (NPH) is a plot twist with hope baked in—because unlike most brain disorders, this one can actually be reversed. In this blog, we explore what NPH really is, how a shunt can save cognition, and why cannabis might offer a side-serving of relief for some. If you’ve ever blamed aging for mental slips or clumsy steps, it’s time to ask better questions—and maybe even thank Billy for the wake-up call.