Hi! I've read and heard claims that vaccines may adversely affect children, in at least some cases. But their older brothers, from an earlier marriage - plus their dad, was also that way to an extent, it sounds like - judging by the fact that they all had difficulty learning how to read in their school years, and having difficulty with math. So in their case, it might be partly genetic, I think. I am very health-minded, and eat very naturally and healthfully, myself. But their family eats more of the "typical American diet" - there's not much I can do about that, but to do my best to get them to eat at least some of the more healthful foods in times when I'm with them. Thanks for your comments! God bless you! By the way, I have taught the children how to read, and am glad for that. But they would have had the same difficulty, I think if it wasn't for my help on it, as compared to learning in a typical classroom setting (not interactive as when with me teaching them).