To be technical, the official job of the FDA and other "health" agencies of the U.S. Government (i.e. this is why they were created in the first place) is to protect the profits of the big pharmaceutical and chemical companies, which have had, and still have, enormous influence in the U.S. government. That is the typical job of all government agencies when they are created, each has a sector of the corporate world to protect, and each is created because of the influence of big corporations.

http://www.cancertutor.com/WarBetween/War_Fda.html