Conditions affecting the nervous system -- such as strokes, migraines and dementia -- have surged past heart disease to become the leading cause of ill health worldwide, a major new analysis said on Friday.

More than 3.4 billion people -- 43 percent of the global population -- experienced a neurological condition in 2021, far more than had previously been thought, the analysis found. Surging nervous system disorders now top cause of illness: study (yahoo.com)