What is Probiotic Food?
Probiotic food is food that contains live bacteria, which is considered beneficial and not harmful to humans. The first example of probiotic food was the introduction of acidophilus to milk, which in some cases helped people who had difficulty digesting milk to be able to tolerate milk better. The specific bacteria used in probiotic food like acidophilus milk is Lactobacillus acidophilus. Such milk was available in the 1920s, and yogurt predates it, but was not specifically supplemented for probiotic effects.