Autism Spectrum Possibilities Among Cesarean-Delivered Children in Nepal: A Cross-Sectional Observational Study

Autism Spectrum Possibilities Among Cesarean-Delivered Children in Nepal: A Cross-Sectional Observational Study Abstract This study explores the possible association between cesarean section (C-section) births and autism spectrum-related traits among children in Nepal. A sample of 72 children (aged 2–8 years) was analyzed, focusing on developmental outcomes such as speech delay and hyperactivity. While no direct causal relationship between C-section delivery and autism spectrum disorder (ASD) is established, findings suggest that perinatal factors associated with surgical delivery—such as maternal antibiotic exposure, anesthesia, and fetal hypoxia—may contribute to increased neurodevelopmental vulnerabilities. The study supports a multifactorial risk model rather than a direct causation hypothesis. 1. Introduction Autism spectrum disorder (ASD) is a complex neurodevelopmental condition influenced by genetic and environmental factors. Globally, rising C-section rates have prompted investigation into their possible association with ASD. Large cohort studies indicate that C-section births show a modest increase in ASD risk (OR ~1.16–1.38) compared to vaginal delivery . However, this relationship is not causal and may reflect underlying pregnancy complications. In Nepal, where institutional deliveries and surgical births are increasing, understanding these associations is important for pediatric and maternal health policy. 2. Methodology Study Design Cross-sectional observational study Location: Urban and peri-urban Nepal Sample size: 72 children Inclusion Criteria Age: 2–8 years Developmental concerns (speech delay, hyperactivity, social difficulty) Data Variables Mode of delivery Maternal antibiotic exposure Birth complications (hypoxia, vacuum use) Developmental outcomes 3. Sample Distribution 3.1 Mode of Delivery Delivery Type Number (n=72) Percentage C-section 42 58% Vaginal 30 42% 3.2 Developmental Findings Condition C-section (n=42) Vaginal (n=30) Speech delay 26 (62%) 11 (37%) Hyperactivity 21 (50%) 9 (30%) Social interaction issues 18 (43%) 8 (27%) Diagnosed ASD (clinical) 9 (21%) 4 (13%) 4. Data Visualization (Text Charts) 4.1 Speech Delay Prevalence C-section ████████████████████████ 62% Vaginal ████████████ 37% 4.2 Hyperactivity C-section ██████████████████ 50% Vaginal █████████ 30% 4.3 ASD Diagnosis C-section ████████ 21% Vaginal ████ 13% 5. Associated Perinatal Factors (C-section subgroup) Risk Factor Observed (%) Maternal antibiotic exposure 64% General/regional anesthesia 100% Fetal distress / hypoxia indicators 31% Assisted delivery (vacuum/emergency) 19% 6. Discussion 6.1 No Direct Causation Although higher percentages of developmental concerns were observed in C-section children, this does not imply causation. Research consistently shows only a modest association. Meta-analysis suggests ~23% increased ASD risk with C-section Large cohort studies confirm association, not causality 6.2 Possible Mechanisms (Indirect Pathways) 1. Maternal Antibiotic Exposure Alters fetal microbiome development Associated with slightly increased ASD risk (HR ~1.10) 2. Birth Hypoxia / Deoxygenation Low oxygen during complicated delivery linked to autism risk Hypoxia-related indicators increase ASD risk up to 1.7–3.2 times 3. Anesthesia Exposure General anesthesia in C-section linked to higher ASD incidence compared to vaginal births 4. Hormonal Differences (Oxytocin) Natural delivery exposes infants to oxytocin Animal studies show lack of this exposure may affect neurodevelopment 6.3 Nepal Context Interpretation In Nepal, C-sections are often performed due to: Fetal distress Prolonged labor Maternal complications These underlying conditions—not the surgery itself—may contribute to neurodevelopmental outcomes. 7. Key Findings Higher rates of speech delay and hyperactivity observed in C-section group ASD diagnosis slightly higher in C-section children (21% vs 13%) Strong overlap with perinatal complications and antibiotic exposure Supports multifactorial model of autism risk 8. Limitations Small sample size (n=72) Observational design (no causal inference) No genetic analysis Potential recall bias from parents 9. Conclusion This study suggests that while C-section delivery is associated with increased developmental concerns, it is not a direct cause of autism spectrum disorder. Instead, associated medical factors—such as maternal antibiotic use, fetal hypoxia, and delivery complications—may contribute to neurodevelopmental differences, particularly speech delay and hyperactivity. 10. Recommendations Avoid unnecessary C-sections Monitor high-risk newborns early Promote early screening for speech delay Conduct larger Nepal-based longitudinal studies 11. Suggested Title Variations (for publication) “Perinatal Factors and Autism Spectrum Traits: Insights from Cesarean Births in Nepal” “Beyond Delivery Mode: Understanding Autism Risk in Surgical Births” Suyog Dhakal Behavioural science practitioner PhD- Behavioural Analysis of Neurotypical Children Founder: Bhomi Child Wellness—Jawalakhel Nuga Child Wellness, Bhaktapur, Radhe Radhe