Bindweed effectively starves tumors by inhibiting blood vessel growth. By stopping new blood vessels from forming, the tumor is denied the nutrients it needs to continue to grow.
"Every aspect of tumor growth requires vascular growth." Inhibit the formation of new blood vessels and the tumor starves.
This is fascinating and worth the read - especially if you or a loved one is dealing with tumors right now.
Check out the linked articles and study below to learn more:
Bindweed, or Morning Glory", is an invasive climbing vine that looks pretty but chokes out other plants. Wikipedia: Convolvulus