Dietary and nutritional interventions in the treatment of childhood neuropsychiatric disorders: evidence and myths.

This review looked at different diets and supplements for children with autism and ADHD. Most dietary changes like gluten-free diets don't help autism symptoms unless your child has actual food allergies. Some supplements like omega-3 and probiotics may have small benefits for specific issues, but results vary greatly between children. The researchers found no strong evidence for general dietary restrictions or supplements.

They recommend only using specific interventions if your child has documented nutritional deficiencies, and always working with healthcare professionals.

This systematic review evaluated dietary and nutritional interventions for childhood neuropsychiatric disorders, including autism spectrum disorder (ASD) and ADHD. The analysis found limited evidence supporting generalized dietary interventions. Gluten-free/casein-free diets showed no benefit for ASD symptoms unless specific allergies exist. Probiotics demonstrated inconsistent results for core symptoms but may help gastrointestinal issues in some individuals.

Omega-3 supplementation showed modest, heterogeneous effects, with high-dose EPA potentially improving attention in ADHD when baseline levels are low. N-acetylcysteine reduced irritability in some trials without consistent core symptom benefits. Folinic acid showed promise in specific subgroups with biomarkers or language impairment, requiring larger confirmatory studies. The review emphasizes individualized approaches over generalized interventions.

Current evidence does not support generalized dietary interventions for childhood neuropsychiatric disorders. Clinical practice should focus on individualized approaches, targeting documented nutritional deficiencies rather than broad dietary restrictions. Continuous monitoring and collaboration with healthcare professionals is essential when considering any dietary or supplementation interventions.

Sample size not reported for this review. The abstract indicates methodological heterogeneity across studies and notes that some promising findings (particularly folinic acid) require confirmation in larger studies. The review period appears to include future dates (2025-2026), which may indicate publication timing issues.

To analyze the current scientific literature on the main dietary and nutritional interventions proposed for children and adolescents with neuropsychiatric disorders and describe their efficacy and safety, differentiating evidence-based practices from common myths. The search was conducted using PubMed, SciELO, Cochrane, and Web of Science databases (2019-2025). The specific terms used in the search were formulated to encompass dietary interventions in children and adolescents with neuropsychiatric disorders and their outcomes. Gluten-free and casein-free (GFCF) diets did not reduce ASD symptoms and should be reserved for confirmed allergy or intolerance.

Probiotics have shown inconsistent results for core ASD/ADHD symptoms, although they may alleviate gastrointestinal complaints in subgroups. Omega-3 s have shown modest and heterogeneous effects; In ADHD, high-dose EPA may improve attention when baseline levels are low, without consistent benefit in other domains. N-acetylcysteine reduced irritability in some trials, with no consistent effect on core symptoms. Folinic acid showed benefits in subgroups defined by biomarkers (folate receptor autoantibodies) and in ASD with language impairment, but this needs to be confirmed in larger studies.

For vitamin D, high rates of insufficiency and possible modest gains in sub-outcomes were observed, with methodological heterogeneity. This literature review showed that there is no scientific support for generalized dietary interventions, such as restrictive diets or nutritional supplementation, in the treatment of childhood neuropsychiatric disorders. Current evidence suggests the need for individualization and continuous monitoring. Specific interventions are justified only in the case of documented nutritional deficiencies.