Cartilage is a type of connective tissue found between the bones and joints of animals and humans.
Shark cartilage is extracted from the heads and fins of sharks. Cancerous tumors require a network of blood vessels to survive and grow. In theory, taking cartilage may prevent blood vessels from forming, thus starving the cancerous tumor and causing it to shrink or perhaps even disappear. At this time, however, it is not known which proteins are responsible for this effect. Don't Get Cancer in which cartilage was promoted as a cancer cure.