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©The Author(s) 2024.
World J Clin Pediatr. Dec 9, 2024; 13(4): 99649
Published online Dec 9, 2024. doi: 10.5409/wjcp.v13.i4.99649
Published online Dec 9, 2024. doi: 10.5409/wjcp.v13.i4.99649
Age range | Normal feeding development | Feeding development in children with autism |
0-6 months | Suck-swallow reflexes are well-developed; begins to coordinate sucking, swallowing, and breathing during feeding | May exhibit weak suck, poor coordination of sucking and swallowing, or difficulties breastfeeding |
6-12 months | Introduced to pureed foods; begins to develop pincer grasp for self-feeding; starts to handle a variety of textures | It may show oral tactile sensitivity or gagging, a preference for smooth, pureed foods, and delays in self-feeding skills |
12-18 months | Progresses to more textured foods; begins to use utensils; starts to drink from a cup | Persistent preference for purees; resistance to textured foods; may continue using a bottle; difficulty using utensils |
18-24 months | Eats a variety of foods; able to chew a wide range of textures; uses a spoon and fork more efficiently | Limited food variety; preference for specific textures or types of food; may have incomplete mastication and occasional choking |
2-3 years | Further develops chewing skills; eats most family foods; drinks from an open cup; uses utensils independently | Continued rigidity with food choices; may insist on specific foods or avoid entire food groups; ongoing issues with chewing and swallowing |
3-4 years | Expands diet to include more complex textures; shows improved self-feeding skills; less picky eating | Persistent selective eating; might insist on using a bottle or refuse sippy cup; difficulty with mixed textures |
4-5 years | Eats a wide range of foods; improved social eating behaviors; uses utensils proficiently | Ongoing rigidity with food variety and textures; may still prefer smooth or specific-textured foods; potential social eating challenges |
5+ years | Generally eats a varied diet, participates in family meals, fewer food-related issues | Continues to display selective eating patterns; may require feeding therapy; potential need for specialized diets to meet nutritional needs |
Aspect | Specific carbohydrate diet | Gut and psychology syndrome diet |
Origins and development | Developed by Dr. Sidney V. Haas in the 1920s | Developed by Dr. Natasha Campbell-McBride in 2004 |
Original purpose | Treatment of celiac disease and gastrointestinal disorders | Addressing neurological and psychological conditions |
Popularized by | Elaine Gottschall, through "Breaking the Vicious Cycle" | Dr. Campbell-McBride, through "Gut and Psychology Syndrome" |
Focus | Elimination of specific carbohydrates to reduce gut dysbiosis | Healing gut lining, restoring healthy gut flora, reducing inflammation |
Principles | Excludes complex carbohydrates, lactose, and sucrose | Focuses on healing the gut lining, restoring gut flora |
Includes easily digestible foods | Eliminates processed foods, refined sugars, starchy vegetables | |
Emphasizes nutrient-dense foods | Structured in distinct phases | |
Main foods | Meat, fish, eggs, vegetables, fruits, nuts, certain dairy products | Similar to SCD, with greater emphasis on bone broth, fermented foods, healthy fats |
Foods excluded | All grains, starchy vegetables, lactose (initially), sucrose, processed foods | All grains, starchy vegetables, refined sugars, processed foods, certain dairy products |
Diet structure | More flexible, with less emphasis on phases | Structured in phases: Introductory phase to full GAPS diet |
Emphasis on healing | Eliminating specific carbohydrates to reduce gut dysbiosis | Healing the gut lining and restoring healthy gut flora |
Food focus | Eliminating specific carbohydrates | Healing foods like bone broth and fermented foods |
Underlying philosophy | Specific carbohydrates promote gut dysbiosis | Gut health linked to psychological and neurological health |
Target conditions | Celiac disease, gastrointestinal disorders, IBD, ASD | ASD, ADHD, depression, psychological and neurological conditions |
Overall approach | Straightforward food elimination | Phased approach with emphasis on gut healing |
Intervention/supplement | Description | Functions | Potential links with ASD | Current research findings | Practical considerations |
Gluten-free diet | Eliminates gluten (wheat, barley, rye). Requires careful planning for nutritional adequacy | Aims to improve gastrointestinal symptoms, behavior, attention, and social interactions | Increased sensitivity to gluten may affect brain function | Mixed evidence; more rigorous trials are needed. | Strict adherence is challenging; potential nutritional deficiencies; more expensive and less accessible |
Casein-free diet | Eliminates casein (dairy products). Requires careful planning for nutritional adequacy | Aims to improve gastrointestinal symptoms, behavior, attention, and social interactions | Sensitivity or allergy to casein may exacerbate autism symptoms | Mixed evidence; more rigorous trials are needed | Strict adherence is challenging; potential nutritional deficiencies; more expensive and less accessible |
Ketogenic diet | High-fat, low-carbohydrate, moderate-protein diet. Requires careful planning, medical evaluation, and regular monitoring | Aims to improve behavior, cognitive function, seizure control, and gastrointestinal symptoms | Ketones may have neuroprotective properties and improve brain function | Limited data; more rigorous trials are needed. | Potential nutritional deficiencies; strict adherence is challenging; potential side effects (GI discomfort, kidney stones, increased cholesterol) |
Specific carbohydrate diet | Eliminates complex carbohydrates, disaccharides, and polysaccharides. Includes meats, certain vegetables, fruits, nuts, and seeds | Aims to improve gastrointestinal symptoms, behavior, and cognitive function | Addresses gut dysbiosis and gastrointestinal inflammation | Mixed results; more rigorous trials are needed | Restrictive; potential nutritional deficiencies; strict adherence is challenging; more expensive and less accessible |
Gut and psychology syndrome diet | Structured in phases, includes bone broths, fermented foods, and healthy fats | Aims to improve gut health, behavior, cognitive function, and overall well-being | Focuses on healing the gut lining and restoring healthy gut flora | Limited peer-reviewed research; indirect support from studies on gut microbiota. | Restrictive; potential nutritional deficiencies; challenging to implement; anecdotal evidence |
Camel milk | Rich in vitamins, minerals, and unique proteins | Anti-inflammatory, antioxidant, immune modulation, gut health promotion | Emerging research suggests behavioral improvements, cognitive functions, and GI symptom relief | Emerging research and anecdotal reports suggest significant benefits | Obtain from reputable sources, gradually introduce, consult healthcare provider for dosage, monitor response and allergic reactions |
Probiotics | Restores healthy gut bacteria balance, reduces gut inflammation, strengthens gut barrier | Improves GI function, potential behavioral improvements | May improve gut health and behavior by restoring healthy gut bacteria | Mixed results; some studies show improved GI and behavioral symptoms | Choose effective strains, determine optimal dosage with clinical guidance, monitor and adjust based on individual response |
Prebiotics | Promotes growth of beneficial gut bacteria, reduces inflammation, supports neurotransmitter synthesis | Improves gut health, potential behavioral and cognitive benefits | May improve gut health and behavior by promoting beneficial gut bacteria growth | Limited human trials but promising; animal models support positive effects | Start with low dose, include prebiotic-rich foods, use supplements under healthcare guidance, consider combining with probiotics, monitor for adverse reactions |
High-dose methylcobalamin | Supports methylation cycle, boosts glutathione synthesis, neuroprotective properties | Enhances cognitive functions, reduces oxidative stress, improves detoxification | May improve behavioral and cognitive functions, reduce oxidative stress | Promising results; improved methylation capacity and reduced oxidative stress markers | Administer via injections, determine dosage with healthcare provider, regular monitoring of vitamin B12 Levels, consider combined treatment with folinic acid |
Folic acid | Supports DNA methylation, reduces homocysteine levels, involved in neurotransmitter synthesis | Potential reduction in ASD risk, improved neurodevelopment, reduced oxidative stress | Prenatal supplementation may reduce ASD risk. | Prenatal doses support reduced ASD risk; large epidemiological studies support benefits | Recommend 400-800 mcg/day prenatal doses, consider genetic variations, ensure balanced diet, consult healthcare provider for high doses |
Vitamin B6 | Synthesizes neurotransmitters, reduces homocysteine levels, converts glutamate to GABA | Potential improvements in behavior, language development, cognitive function | May improve behavior, language, and cognitive functions | Mixed results; some studies show improvements; variability in outcomes | Determine dosage with healthcare provider, monitor for side effects (peripheral neuropathy), consider combination with magnesium. |
Vitamin D | Fat-soluble vitamin; exists as vitamin D2 and D3; synthesized in skin or obtained from food sources | Facilitates calcium and phosphorus absorption, modulates immune system, reduces inflammation, supports brain development | Low vitamin D levels linked with ASD risk; deficiency associated with immune dysregulation and neurotransmitter imbalances | Benefits of vitamin D3 supplementation include improved autism severity scores and social behaviors | Dosage varies; general recommendation 600-800 IU daily; excessive intake can lead to toxicity; regular monitoring essential |
L-Carnitine | Naturally occurring amino acid derivative; involved in energy metabolism and mitochondrial health | Facilitates fatty acid transport into mitochondria, supports mitochondrial health, and has antioxidant properties | Mitochondrial dysfunction and oxidative stress observed in autism; L-carnitine may improve mitochondrial function and reduce oxidative stress | Lower L-carnitine levels in autism; improvements in behavior and communication with supplementation. | Dosage ranges from 50 to 100 mg/kg/day; consult healthcare providers; generally safe but may cause gastrointestinal discomfort or fishy odor |
Omega-3 and Omega-6 | Essential polyunsaturated fatty acids; Omega-3 (ALA, EPA, DHA) and Omega-6 (LA, AA) | Vital for brain function, anti-inflammatory effects, and overall neural health | Omega-3 deficiencies may impair neurodevelopment; Omega-3s may improve behavior; Omega-6 imbalance can promote inflammation | Mixed results; some studies show improvements in behavior, cognitive development, and social skills | No standardized dosage; consult healthcare providers; high doses may cause GI issues and increased bleeding risk; balance omega-3 and omega-6 intake |
- Citation: Al-Beltagi M. Nutritional management and autism spectrum disorder: A systematic review. World J Clin Pediatr 2024; 13(4): 99649
- URL: https://www.wjgnet.com/2219-2808/full/v13/i4/99649.htm
- DOI: https://dx.doi.org/10.5409/wjcp.v13.i4.99649