Well, my nephew is high functioning autistic and so is my best friend's son.
I think part of the increase in autism is simply due to better screening techniques. There have always been autistic kids, and always will be,
they're just getting better at recognizing it.
Some of it is genetic, but I personally think a lot of it has to do with environmental issues. What the mother is exposed to in her diet and in her
surroundings during pregnancy probably has a much larger impact than genetics alone.
I know a couple people online who have autistic children, and for many of them, their symptoms are made worse by diet. One woman has a son that loses
his speech if he eats anything commercially processed. She grows a lot of her own food with organic methods to keep this under control.
Red dye #40 is a big culprit in increasing autistic behaviors, as well as ADD/ADHD and related disorders. Some kids show autistic behaviors because of
allergies.
There are some interesting pages on food-related autism:
www.fedupwithfoodadditives.info...
www.healthcentral.com...
www.betterhealthusa.com...
There's plenty more to see if you Google "food + autism"
It's my own personal belief that what they are doing to our food causes a lot of our health issues in this country, including obesity, cancer,
certain auto-immune disorders, etc.
You could try putting your grandson on a specialized diet and see if that doesn't help him. It doesn't do the trick in all autism cases, but it's
worth a shot.