Final answer:
The concern about raw dairy products is valid; they can contain harmful microorganisms, justifying the need for pasteurization. Grain-fed versus grass-fed milk is debated, but for safety, both should undergo pasteurization.
Step-by-step explanation:
The question addresses concerns often raised about the dairy industry and pasteurization processes. The claim that "raw" or unpasteurized dairy products contain deadly microorganisms is supported by scientific consensus and is therefore factual. Consuming unpasteurized dairy products can lead to foodborne illnesses due to the presence of harmful bacteria such as E. coli, Listeria, and Salmonella. This risk justifies the need for pasteurization, a process that involves heating milk to a specific temperature to destroy these microorganisms without significantly affecting its nutritional content. Regarding the question of grain-fed versus grass-fed milk, opinions differ within the industry. Some consumers and experts prefer grass-fed milk, citing potential health benefits and flavor preferences. Grass-fed cows often graze on pasture, and their milk can contain different levels of certain fatty acids compared to grain-fed cows. However, whether milk comes from grain-fed or grass-fed cows, pasteurization is an essential step to ensure safety for human consumption, according to public health guidelines.