Occurs naturally in raw milk....funny how man trys to imitate nature by adding lacto acidophilus to pasturized milk.
I agree with you though, lot of benefits from active cultures. If your going to eat pasturized dairy, high quality yoghurt is the best way. The greek yoghurt is great stuff, good substitute for sourcream as well-
Do you know what else can occur naturally in raw milk?
Salmonella
Rabies
E. coli
Listeria
Various Streptococcus and Staphylococcus bac-t
numerous other pathogens