See BBC Newsnight on monday, 15th October about litigation surrounding the mis labelling and marketing of food products in the United States - (17.34-35.18)
http://www.bbc.co.uk/iplayer/episode/b01ngs83/Newsnight_15_10_2012/
It was followed up with a piece for Huffington Post
http://www.huffingtonpost.co.uk/dr-aseem-malhotra/false-advertising-by-big-food-driving-obesity_b_1968682.html