21.   Studies evaluating the effectiveness of shark cartilage are ongoing.

22.   The agency also cites four companies for deceptive online marketing of products like magnets and shark cartilage.

23.   The agency also cites four companies for deceptive on-line marketing of products like magnets and shark cartilage.

24.   The anti-cancer theory behind shark cartilage is that it has properties that block the growth of the tiny blood vessels that feed tumors.

25.   They have said this fact does not detract from their belief that shark cartilage has anti-cancer properties.

26.   He criticized the study for taking people off treatment too soon and for using what he considered to be an inferior brand of shark cartilage.

27.   His Oasis Hospital treats cancer with natural methods such as Vitamin C, shark cartilage and Laetrile, a controversial anti-tumor substance derived from apricot pits.

28.   Shark cartilage, often touted as a cancer cure, has proved worthless in the first careful scientific study in people with advanced tumors.

29.   Shark cartilage is marketed as a natural treatment for cancer and eye disease and is used in a range of health food products.