The whole concept of "disease" as posited by western medicine is flawed. It is based on infectious processes where an external causal agent enters the body and causes dysfunction. That external infectious agent then needs to be removed and all will be well. Chronic diseases are the result of system wide bodily dys-regulation. There is no single entity to eradicate. Instead what is needed is the removal of all agents causing the dys-regulation of bodily systems and the addition of the conditions necessary for the body to restore itself to optimal functioning. So we remove sugar and other high carbohydrate foods and provide the body with the necessary nutrients from whole foods and supplements where indicated. If you also add in adequate exercise, sufficient sleep and stress reduction you have created the conditions under which a human body can flourish, given the constraints built into our inevitable mortal condition. Of course it is more complicated than this and the devil is in the details but still how we conceptualize "disease" effects how we treat it and the infectious disease model does not work for most chronic conditions.