You can only heal the body by healing the consciousness. All diseases originates from within, and therefore can only be healed from within. Medicine only facilitates healing but it does not heal. What matters is not the medicine, but rather how you think of it. All disease that manifests in the outer, physical body has arisen from within the conscious or subconscious mind. They are the effects of your thoughts and feelings.
Stress is something we all complain about and something that every human feels at various times and yet a definition of stress alludes us. Although there are plenty of definitions around, one of the most useful is: "Stress is any change to which you must adjust."