text: how are people with diabetes affected by genetic engineering?   more than 4 million people around the world them take "humulin" a genetically-engineered human insulin product that is grown up on huge vats of bacteria.  without this product, many people would not be able to use insulin produced by animals. i am listing a reference with more information about it, in case you are interested. also, there has n=been some recent talk about "gene therapy" to correct type ii diabetes.