This online article describes and evaluates the Gluten-Free, Casein-Free Diet (GFCF), which is based on the idea that people on the autism spectrum do not properly digest gluten and casein and that removing them from the diet is therefore necessary. The article notes that this theory is weak and that evidence to support it is inconclusive. Therefore, the authors do not recommend that the GFCF diet be used.

Research Autism was a charity funding research in autism interventions. Research Autism’s information services have been absorbed by the National Autistic Society (NAS). Founded in 1962, the NAS “provide[s] information, support and pioneering services, and campaign[s] for a better world for autistic people. [Website]