Children with autism often have significantly lower levels of Vitamin D than their peers.

By Aniket Chakraborty July 11, 2025 Arrow HEALTH & WELLNESS

Early-life deficiency in Vitamin D is now linked to a higher risk of developing ASD.

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New studies show high-dose Vitamin D may improve core symptoms like eye contact and focus.

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Vitamin D helps regulate serotonin and reduces inflammation—key in brain development.

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A 4-month trial found meaningful ASD symptom improvements without any toxic effects.

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Supplementation improved stereotyped behaviors and boosted attention in some cases.

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However, results on social skills and broader symptoms remain mixed across studies.

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Experts urge routine 25(OH)D testing for ASD children, especially with poor sun exposure.

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Pharmacists and pediatricians can guide safe, personalized Vitamin D supplementation.

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While not a cure, Vitamin D offers a promising, affordable tool in holistic ASD care.

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