Why white food is bad for you

Today I read that a Harvard University study found that eating several servings of white rice weekly increased the risk of diabetes, compared to those who ate only a little, or avoided it altogether.  Another study showed that those who consumed brown rice were 11% less likely to get diabetes.  The production of white rice involves stripping all the good stuff out of brown rice (such as bran and germ), leaving the white rice to be converted into blood sugar much more quickly in your body  than brown rice would (this is a bad thing).  Also, the fiber nutrients that are stripped from the brown rice are known to stave off diabetes.