Nutritional and Dietary Treatment Study for Children/Adults With Autism

70 children and adults with autism spectrum disorders will be enrolled in a 1-year, single-blind treatment study. Assessments will be conducted at the beginning and end of the study, including measurements of nutritional, metabolic, and digestive status and assessments of autism severity and overall functioning. Half of the participants will be randomized into a treatment study, and half will be randomized to no changes in their current treatments. Treatments will be added in a sequential manner over 12 months, including vitamin/minerals, essential fatty acids, carnitine, digestive enzymes, and healthy, gluten-free, casein-free diets. A dedicated team of nutritionists, nurses, and physicians will support and monitor the participants throughout the study. A group of 50 neurotypical children and adults, of similar age and gender, will be included for comparison.