How do diseases of pregnancy interrupt homeostasis?

?homeostasis: Don 't know what you mean. During pregnancy you are feeding your growing infant. Most diseases of pregancy are due to lousy diet that is so common in U.S. E.G. Nausea and vomiting is diet related and so is toxemia. It is hardly surprising that the fetus is affected. So some common conditions in infants are actually set up during the pregnancy.