Grass Feeding Produces CLA -- conjugated linoleic acid

 https://www.csuchico.edu/grassfedbeef/research/documents/sources/Chin%20SF,%20Conjugated%20Linoleic%20Acid%20More%20than%20an%20anticancer%20factor.pdf

The results from the latest dietary studies show that CONJUGATED LINOLENIC ACID - WHICH IS ONLY FOUND IN GRASS FED ANIMALS....IS A POWERFUL ANTI-CANCER NUTRIENT. CLA a potent anti-cancer nutrient The term conjugated linoleic acid and its acronym CLA refer generally to mixtures of positional and geometric conjugated dieonic isomers of linoleic acid. The CLA found in beef, lamb and any wild game that is primarily fed on grass (buffalo, yak) is particularly important in cancer prevention and progression interference....