Disease is the effort your body makes to free itself from conditions that result from a violation of the laws of health. In other words, disease is just the symptom, not the cause. This is why drug medication will never cure disease because it doesn't address the cause. For instance, your body is 75% water. When we don't drink enough pure water, the symptoms (disease) which follow include headaches, high blood pressure, arthritis, dry skin, constipation, liver, and kidney problems. No drug created will ever remove the cause of you not drinking enough pure water!
To cure any disease successfully, the cause must be ascertained, unhealthful conditions changed, and wrong habits corrected. Then you can successfully assist the body in its effort to expel imurities and re-establish right conditions in the system.