Good for the Cdn food guide researchers for focusing on objective nutritional/medical research studies verses biased lobby groups like the diary industry.   Yes I care about animal welfare and I know of the direct negative impact of livestock production on the environment but I also have read many studies that conclude dairy and meat are not healthy for humans.   ie. Dairy contains insulin growth factor one, naturally it is a growth hormone to help baby cows grow to adult cows but it is like rocket fuel for precancer cells in humans as it is a growth hormone.   I have read the Harvard nurses study which found nurses whom consumed dairy products had more bone fractures then those that did not.  There is an abundance of similar studies re: meat and dairy.   Meat is linked to kidney stones, heart disease, strokes ect....   It would be highly nutritionally negligent for the Cdn food guide to have dairy and meat as food groups.