David
                    
                    
                    
                    
                    
                    
                    
                        
                        
                        Is there any research out there on   Autism that authentically identifies any  Environmental or food allergies that create or factor into the disorder.  Our  son is 20 now.  He was pretty much normal, smiling, interacting, and very  much participating in all aspects of life until the textbook age of 30 months when he began losing