Some studies seem to show that although our lifespan is significantly longer than at any point in history, we actually are being assaulted daily by chemicals, toxins, drugs and stresses that would have killed even the strongest human at any other time. We believe that because we are so advanced, we should be able to live a long, healthy life. But the reality is very different. Studies show that infection and immune dysfunction are the strongest contributory factors to chronic disease and debilitation.