My Personal Opinion – All Lack of health comes from a split between you and your creator.
The Mind – and not the ego (ego being beliefs and acquired habits and perceptions) is the reflection of who You are that was created in God’s Image. Your mind is consciousness but is not your thoughts.
Your beliefs, perceptions & conditioning are what is keeping you separate from GOD. This is ultimately where all sickness and disease come from. This split.
It is also why there are so many ways to heal symptoms and disease. Because there are so many ways to help bring you closer to recognizing your Birth Right and being one with God Again.
You eliminate beliefs and symptoms and disease heal. Because the beliefs where causing the illusion of separation for you.
You Pray and your requests help heal your split mind.
You Mediate, Make Declarations and Visualize helps heal the split.
Notice How I didn’t say anything in here about drugs and surgery. They only help cover up symptoms, and if anything, increase the split between you and Your Creators.
Your main healing tool is to become one again with your Creator. Actually, you never were really separate, that is the illusion your collection of beliefs and perceptions has formed. It is just remembering your oneness with Her.