Is there a diet for autistic adults with violent behavior problems which will help them feel more at ease? he is only 18 and goes through very dramatic ups and downs, we think it might be hormones.

No: According to dr. Martha herbert, a pediatric neurologist: "so many autistic kids have a history of food and airborne allergies or eczema, or diarrhea." what if treating these physical issues could improve the behavioral symptoms of autism? That's the basis of the autism diet (examples-eliminating glutens and casein). The diet hasn't been scientifically proven to improve symptoms or help recover.

Maybe: I know of a book called: special diets for special kids by lewis which may have some suggestions. In general though, the person to whom you are referring may benefit much more by seeing a board certified child psychiatrist. It may be hormones like you say, and that can be addressed as well. Here is a dvd about behavior problems: http://www.Amazon.Com/s/ref=nb_sb_ss_i_0_16?Url=search-alias%3daps&fi.

Nothing Ever Proven: Although some claim that a gluten free or lacctose free diet helps, no strong evidence exists that this is true.However it is safe and harmless to try.

Comorbidities: Needs thorough medical & dental exams, eeg, baer, vision exam. May require sedation. Blood tests: genetic microarray, dna probe for fragile x, celiac panel, food allergy panel, etc GI eval for esophagitis, constipation, foreign bodies. Functional behavioral assessment for environmental precipitants. Psychiatric eval for mood/anxiety disorders. May need psychopharmacologic meds + behavioral therapy.