After reading about the ill effects of Pasteurized Milk by sgforums TS, I searched the web and found this:
Got Milk? Make Sure It's Pasteurized
By Linda Bren
Pasteurization, since its adoption in the early 1900s, has been credited with dramatically reducing illness and death caused by contaminated milk. But today, some people are passing up pasteurized milk for what they claim is tastier and healthier "raw milk."
Public health officials couldn't disagree more.
Drinking raw (untreated) milk or eating raw milk products is "like playing Russian roulette with your health," says John Sheehan, director of the Food and Drug Administration's Division of Dairy and Egg Safety. "We see a number of cases of foodborne illness every year related to the consumption of raw milk."
More than 300 people in the United States got sick from drinking raw milk or eating cheese made from raw milk in 2001, and nearly 200 became ill from these products in 2002, according to the Centers for Disease Control and Prevention.
Raw milk may harbor a host of disease-causing organisms (pathogens), such as the bacteria campylobacter, escherichia, listeria, salmonella, yersinia, and brucella. Common symptoms of foodborne illness from many of these types of bacteria include diarrhea, stomach cramps, fever, headache, vomiting, and exhaustion.
Most healthy people recover from foodborne illness within a short period of time, but others may have symptoms that are chronic, severe, or life-threatening.
Those in favour of raw milk says:
In face of these facts (the facts that pasteurized milk is unhealthy) -which are undeniable-what has the Pasteurization Party to say? Instead of compelling dealers to set up expensive machinery for turning raw milk into something that is definitely not what it sets out to be — a nutritious, health giving food — let them pass legislation making the dairy-farmers produce clean, raw milk — that is milk pure to drink with all its constituents unaltered.
The above was published in Magazine Digest - June 1938
Armchair Science is a British Medical Journal
Note that they are advocating for Clean Raw Milk is up to now, is impossible to produce.