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Monday, July 9, 2012

RAW MILK CONSUMPTION-THE "SAFETY" DEBATE

Why should the milk undergo the routine thermal processing involving heating to 161F for 15 seconds or any other heat treatment before marketing? Any school going kid will answer this question as every one knows it is a highly perishable commodity incapable of keeping in good quality even for a day without getting spoiled and becoming unfit for human consumption. There are many bacteria in milk by the time it is extracted from the milch animal and as it is one of the richest sources of vital nutrients for growth of any living organism, it is no wonder these bacteria proliferate quickly causing chemical, physical and microbiological changes in the material. Why some people are defying this scientific truth and still advocate consumption of raw milk is puzzling. Most charitable explanation could be that such irrational practices arise out of ignorance prevailing among some people. According to knowledgeable scientists, nutritionists, health pundits and toxicologists, raw milk consumption has the potential to make people sick through contamination with pathogenic bacteria like Salmonella, virulent E.coli, Listeria, Campylobacter etc with undesirable consequences like fever, head ache, diarrhea, abdominal pain, vomiting besides other long term health problems. Here is a commentary on this queer phenomenon of a few people stubbornly campaigning against pasteurization process and encouraging consumption of only raw milk.       

"Earlier this year, the U.S. Centers for Disease Control concluded a 13-year study and reported raw-milk products are 150 times more likely to cause foodborne illnesses than pasteurized dairy foods. In January, 81 people in four states developed intestinal infections from raw milk traced to a Franklin County dairy farm, according to the state Department of Health. They were sickened by campylobacter bacteria, which causes fever, diarrhea, vomiting and headaches. At least nine people were hospitalized. "The health issues are considerable," said James Dunn, Ph.D., an agricultural economist at Penn State University. "It doesn't have to be a big mistake to have a big implication. When you pasteurize milk, it kills the germs." Conventional milk is pasteurized in a process that typically heats milk to 161 degrees for 15 seconds to kill bacteria. Advocates of raw milk, though, say it can cure illnesses and protect against diseases. "Pasteurization is the greatest destruction of nutrients of anything we have in this country," said Sally Fallon Morrell, president of the Weston A. Price Foundation, a nutrition advocacy organization based in Washington, D.C. "Raw milk is an extremely nutrient-dense food." Unpasteurized milk helps protect against asthma, allergies and skin problems and builds strong teeth and bones, Ms. Morrell said.
"These things need to be looked at more," she said.

Some of the justifications touted by the protagonists of raw milk cannot stand scientific scrutiny and many of their claims are just outlandish. It is not correct to say that pasteurization destroys nutrients, creates lactose intolerance, causes allergy and kills active cells supposed to beneficial. Of course the argument that babies fed on breast milk thrive well is a perfectly valid one but it must be remembered that milk is directly transferred from the mother to the child without any out side intervention , thereby eliminating the chances of contamination of the ingested milk. In contrast commercial operations like milking, use of containers, milking environment, chilling, bulk transport, packing etc can cause havoc to the microbial quality of milk and only pasteurization process can stop this eventuality. The compulsions of modern life like ready access to milk 24x7, distribution time, retailing and storage in kitchen for consumption as and when needed all make it imperative to preserve the milk at least for a few days. Not only fluid milk but products made from raw milk including soft cheeses like Brie, Camembert, Queso Fresco, Panela, Asadero etc are also considered risky to consume, especially by vulnerable consumers like pregnant women, old people and those with weakened immune system. An interesting issue is that consumption of raw milk in the US has caused only less than 1000 milk related safety episodes since 1998 and therefore it would be better to leave those insisting on consuming raw milk to continue to do so, in stead of arguing the case against the practice.   

V.H.POTTY
http://vhpotty.blogspot.com/
http://foodtechupdates.blogspot.com

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