The Top 100 Grocery Brands report article "Healthy eating trend takes natural turn" just out says that in 2007 "some of the top-selling brands are naturally healthy or functional"
"Brands that have sold well in 2007, for example, include the smoothie company Innocent (up 45.6%), Cravendale milk (up 30.6%), Cathedral City cheese (up 29.3%), Uncle Ben's rice (up 26.9%) and Danone Activia probiotic yogurt (up 25.9%)."
Very intersting report on the whole.
See http://www.talkingretail.com/top-100-grocery-brands for the full report