Rev 22:2 – In the midst of the street of it, and on either side of the river, was there the tree of life, which bare twelve manners of fruits, and yielded her fruit every month: and the leaves of the tree were for the healing of the nations.

If there is a tree whose leaves are for the healing of nations, then the plan of God for us is to enjoy divine health, adequate provision has been made in Heaven that will take care of all manner of sickness in this world.