Cancer stem cells are why a cancer is hard to eliminate. Cancer treatments per se can convert ordinary cancer cells into stem-cell like cancer cells which are resistant to cancer treatments. That is why cancer treatments can induce drug resistant cancer. Once the cancer becomes drug resistant, there will be no more effective conventional treatments available.
However, thousands of natural compounds or phytochemicals can exactly kill cancer stem cells and help cure cancer. They include curcumin, EGCG, sulforaphane, resveratrol, genistein which are most commonly used by cancer patients.
Curcumin is the major active ingredient in turmeric which is used in curry. This phytochemical can not only help cancer, but also help prevent pre-diabetes from progressing to become diabetes.
EGCG is an active ingredient from green tea. Its anticancer activity has been demonstrated in animal trials. This compound can also help fight obesity among other things.
Sulforaphane is found in broccoli. It is an strong antioxidant.
The review was published here.