Raw (unpasteurized) milk

Raw milk can carry harmful bacteria that can make you very sick. They include Campylobacter, Cryptosporidium, E. coli, Listeria, and Salmonella. Although liseriosis (the infection caused by Listeria) is rare, pregnant women are less capable of fighting it off, which means that it can be more deadly in pregnant women. In addition, it’s possible for the unborn baby to become ill as well. Older adults and people that have a compromised immune system are also in greater danger than the general population.

It’s best, therefore, for everyone to drink pasteurized milk. For those at greater risk, take the extra precaution of not eating any dairy products made from unpasteurized milk (raw cheeses, for example).