Dianne and all, Re: your question whether lowered IQ acquired through formula feeding would be passed down from generation to generation through heredity, the answer is no. There is no heredity of acquired characteristics. Only characteristics that are genetically determined are inherited. Formula feeding will not affect that part of intelligence that is determined by genes. An analogy: If one of your fingers is amputated, would you expect your children to have only nine fingers? No, your offspring do not inherit a chacteristic that you acquire. Warmly, Carol Kelley LLLL Taylors SC