I believe that faith alone is the greatest healer known to mankind. The mind directs the body. When the mind fully believes in the suggested healing the unlimited true self will manifest this in the body. Keep in mind that faith has many forms, for some it is faith in a faith healer, for others it may be faith in a placebo or in the power of an MD (medical deity) or any any other externalized object of faith. It's important to understand that our own God given true self is the actual healer yet it has been presented as a miracle power given exclusively to charlatans throughout the ages.