Prospective relationship between autistic traits and nutrient intakes among Japanese children: Results of the Shika study.

Hiromasa and colleagues tracked Japanese children for three years.

They used diet records and questionnaires to measure nutrient intake.

Kids with higher autistic traits were compared to peers with lower traits.

Children with more autistic traits ate less calcium, iron, vitamin D, and B-vitamins.

The shortfalls stayed stable across all three years.

Sodium and magnesium were also lower in the same group.

Esteban-Figuerola et al. (2019) pooled 18 earlier studies and saw the same calcium and vitamin D gaps.

Çıtar Dazıroğlu et al. (2024) recently repeated the pattern in Turkish kids, adding lower antioxidant capacity.

Kydd et al. (1982) once declared no nutrient differences, but they used hair minerals, not food records—diet logs catch what hair tests miss.

Matson et al. (2008) showed autistic boys on restricted diets had thinner bones, a real-world echo of the low calcium intake found here.

Low minerals and B-vitamins can affect sleep, bone growth, and energy levels.

You can spot the risk with a quick diet recall at every appointment.

If intake is low, refer to a dietitian and consider a supplement plan before problems show up on a growth chart.