One of the first things that could be done is to educate the public on doing those things that support and strengthen the natural immune system. Replace pharmaceutical ads on TV with public health information. Show statistics of kids with autism followed by ways to reduce autism. Show statistics of Amish kids great health, and show the kids eating healthy, exercising, etc. Program the good stuff, healthy foods, exercise instead of pharmaceutical poison. For example show a group of middle aged adults walking briskly outside and then share the statistics that a daily brisk 30min walk reduces the chance of getting diabetes by such and such a percentage. Instead of pushing drugs. Show kids eating eggs, toast and fruit for breakfast ( instead of sugary cereals) and speak about their statistically higher attention scores, grades, overall health rather than advertise drugs for ADHD.😇😉