Published online Jun 20, 2025. doi: 10.5493/wjem.v15.i2.101555
Revised: January 20, 2025
Accepted: February 6, 2025
Published online: June 20, 2025
Processing time: 209 Days and 2.9 Hours
Core Tip: Increasing evidence supports the nutritional epigenetics model for autism and attention deficit/hyperactivity disorders that explains how unhealthy diet contributes to the epigenetic inheritance of these disorders. An unhealthy diet characterized by excessive intake of ultra-processed foods results in heavy metal exposures and deficits in zinc that may impact metallothionein gene function. Metallothionein gene malfunction may result in the bioaccumulation of mercury and/or lead in the blood depending on diet. Nutritional epigenetics education may be used as an intervention to reduce the intake of ultra-processed foods and heavy metals in expectant mothers and prevent the development of autism and attention deficit/hyperactivity disorders in children.
