Shanghai Jiao Tong University Jul 2 2025 This study investigates the effectiveness of a vitamin D3-loaded nanoemulsion in improving the core symptoms of autism spectrum disorder (ASD) in children. Children with ASD often have low vitamin D3 levels, which are linked to delays in language development, adaptive behavior, and fine motor skills. While traditional vitamin D3 supplementation has shown mixed results in past studies, this research evaluates whether a nanoemulsion form-engineered to