In women, while higher estrogen levels correlate to lower risk of the heart diseases, hormone replacement therapy with estrogen and progestin increases the risk of heart diseases. Rich Americans are correlated with rich states and rich states are correlated with voting for the Democrats but rich Americans, on the whole, do not vote for Democrats. For example, if 30% people suffer from diabetes and 40% suffer from heart diseases, and they all end up in the hospital than a statistical analysis at the hospital will conclude that diabetes is negatively correlated with heart diseases even when no such correlation exists.