Breaking the cycle of oxidative stress for better behavioral health in autism spectrum disorder: A scoping review.

This review looks at how oxidative stress (damage from harmful molecules in the body) might contribute to autism symptoms. Children with autism often have weaker natural defenses against this damage, which may worsen their behavioral challenges and quality of life. Some treatments like NAC supplements, vitamins, and antioxidant-rich foods show promise for reducing this damage and improving social skills. However, more high-quality research is needed to understand which treatments work best.

This scoping review examines the relationship between oxidative stress and autism spectrum disorder (ASD). The authors describe how oxidative stress occurs when reactive oxygen species overwhelm antioxidant defenses, leading to cellular dysfunction in neurons including synaptic problems, altered receptor function, and neuroinflammation. Children with ASD show reduced antioxidant capacity that correlates with more severe behavioral symptoms and poorer quality of life. The review evaluates therapeutic interventions targeting oxidative stress, including N-acetylcysteine (NAC), vitamin/mineral supplementation, and dietary antioxidants, which show promise for improving social responsiveness.

The authors note that hyperbaric oxygen therapy and cleanroom environments remain controversial approaches.

Oxidative stress assessment may become valuable for treatment planning in autism. Antioxidant interventions like NAC and nutritional supplementation warrant consideration as adjunctive therapies. However, practitioners should await results from rigorous clinical trials before implementing oxidative stress-targeting interventions as standard care, and should be cautious about controversial approaches lacking evidence.

As a scoping review, this study synthesizes existing literature rather than providing new empirical evidence. The authors acknowledge critical research gaps and emphasize the need for well-designed randomized controlled trials with precision medicine frameworks to establish therapeutic efficacy.

Autism Spectrum Disorder (ASD) is a complex neurodevelopmental condition marked by socio-communicative and behavioral challenges. ASD is increasingly linked to oxidative stress, which stems from a destructive imbalance state whereby excessive reactive oxygen species (ROS) overwhelm antioxidant defenses. This redox imbalance triggers a cascade of cellular dysfunctions, which in neurons include synaptic inefficiency, altered receptor function, excitotoxicity, and chronic neuroinflammation. All these dysfunctions add an additional burden to the genetic and epigenetic contributions underlying autism pathophysiology in each single individual, ultimately exacerbating ASD core symptoms.

Strikingly, children with ASD exhibit diminished antioxidant capacity, correlated with heightened behavioral severity and impaired quality of life. This scoping review explores the intricate relationship between oxidative stress and ASD, evaluating current therapeutic strategies aimed at restoring redox balance while identifying critical research gaps. Interventions such as N-acetylcysteine (NAC), vitamin and mineral supplementation, and dietary antioxidants have shown promise in mitigating oxidative damage and improving social responsiveness. Other strategies, in particular hyperbaric oxygen therapy (HBOT) and cleanroom environments, are highly controversial.

Well-designed randomized placebo-controlled trials (RCTs) integrating clinical and psychodiagnostic measures with precision medicine frameworks, are crucial for developing targeted therapies that, restoring redox homeostasis, may optimize neurodevelopmental outcomes. By summarizing current evidence and addressing these gaps, this review underscores the therapeutic potential of oxidative stress correction in improving the quality of life of individuals with ASD.