- Eliminates all meat products
- Allows for non-meat animal products
- Heavy in fruits, vegetables, and grains

Vegetarian diet

- Removes all wheat products from diet
- Allows for all other food groups
- Used by those without celiac disease
- Can cause IBS in those who start the diet
- Those with IBS who start the diet can experience a reduction in symptoms

Nonceliac gluten sensitivity diet

A ketogenic diet is high in fat, moderate in protein, and low in carbohydrates (typically ≤ 50g of carbs per day). This dietary approach can help improve insulin sensitivity and promote weight loss.

Ketogenic diet

Individuals with Autism Spectrum Disorder (ASD) often exhibit atypical eating behaviors, including picky eating and a preference for highly processed foods, which can increase their risk for obesity and eating disorders. Various dietary interventions have been explored to help manage these eating habits and certain ASD-associated behaviors, including:
- Nonceliac gluten sensitivity diet
- Ketogenic diet
- Vegetarian diet

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* Autism and diet
* ADHD and diet
* Intellectual disabilities and diet

Diet and Disabilities

Abd El Baaki, O.M., Abd El Hamid, E.R., Zaki, S.T. et al. Diet modification impact on ADHD outcome. Bull Natl Res Cent 45, 15 (2021). https://doi.org/10.1186/s42269-020-00466-x

Batch, J. T., Lamsal, S. P., Adkins, M., Sultan, S., & Ramirez, M. N. (2020). Advantages and Disadvantages of the Ketogenic Diet: A Review Article. Cureus, 12(8), e9639. https://doi.org/10.7759/cureus.9639

Doreswamy, S., Bashir, A., Guarecuco, J. E., Lahori, S., Baig, A., Narra, L. R., Patel, P., & Heindl, S. E. (2020). Effects of Diet, Nutrition, and Exercise in Children With Autism and Autism Spectrum Disorder: A Literature Review. Cureus, 12(12), e12222. https://doi.org/10.7759/cureus.12222

Gast, D. A. A., de Wit, G. L. C., van Hoof, A., de Vries, J. H. M., van Hemert, B., Didden, R., & Giltay, E. J. (2022). Diet quality among people with intellectual disabilities and borderline intellectual functioning. Journal of applied research in intellectual disabilities : JARID, 35(2), 488–494. https://doi.org/10.1111/jar.12958

Hargreaves, S. M., Raposo, A., Saraiva, A., & Zandonadi, R. P. (2021). Vegetarian Diet: An Overview through the Perspective of Quality of Life Domains. International journal of environmental research and public health, 18(8), 4067. https://doi.org/10.3390/ijerph18084067

Sergi, C., Villanacci, V. & Carroccio, A. Non-celiac wheat sensitivity: rationality and irrationality of a gluten-free diet in individuals affected with non-celiac disease: a review. BMC Gastroenterol 21, 5 (2021). https://doi.org/10.1186/s12876-020-01568-6

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