There are a few cases, very rare, very special, in the medical literature in which the cancer from one person took root and grew in another person.

NPR: Startling New Evidence Cancer Is Contagious

Are you a root and branch type of person when it comes to change or do you think nudging events in the right direction is more constructive?

FORBES: Six Great Questions About the Murdochs

Valerenic acid, an ingredient of the root, acts on chemical pathways in the brain that control a person's level of anxiety or relaxation, according to scientific literature.

WSJ: Can a Root Get to the Problem of Insomnia?