Medically, we can’t prevent kids from pica. We can identify pica very early with the following strategies.
Maintain a balanced nutritious diet for the kids and keep an eye on their eating habits
Proper communication with the kid as to no to eat the non-food items.
A check-up with the doctor at regular intervals.
If there are mental health issues, take up adequate treatment. Neglecting could create unnecessary complications.
But, with early identification and intervention on food habits, we can cure pica quickly before it creates more complications.