I found inspiration on a blog of a man who lost his wife to cancer. He credits this juice to extending her life by 6 months. During a time when all she could stomach was ice cream and cold desserts, he bought a juicer and her body was able to handle and benefit from this juice.
I changed his recipe a bit based on what I had available, but you can see his original post here:
Thursday morning's cancer fighting juice
2 honey crisp apples
1 white mango
1 broccoli stalk and crown
2 kale leaves
6 baby carrots
Note: I never add the kale first.
Note 2: I tried to add blue berries, but they didn't seem to add any juice.