Autism Subtypes Split by Diagnosis Age

An international Nature study of 45,000 autistic people reports those diagnosed in early childhood have different genetic profiles than those diagnosed later. This indicates ‘autism’ is an umbrella that covers multiple biological conditions along a gradient, not a single disorder. It challenges one‑cause explanations and suggests tailored screening and interventions by subtype and timing. — It reframes autism policy, research funding, and causal debates (e.g., vaccines, medications) toward defined subtypes and better measurement instead of monolithic claims.