Pasteurization was discovered in 1860s, so she probably didn't have to. It was made mandatory starting in the late 1940s in the US. Prior to that, a whole bunc

Pasteurization was discovered in 1860s, so she probably didn't have to. It was made mandatory starting in the late 1940s in the US. Prior to that, a whole bunch of folks got TB from it. Here's a PSA about making milk safe for babies from 1912; https://commons.wikimedia.org/wiki/File:Give_The_Bottle-Fed_Baby_a_Chance_For_It%27s_Life_poster.jpg https://commons.wikimedia.org/wiki/File:Give_The_Bottle-Fed_... If you're referring to breast milk, your mother probably wasn't raised in a dairy farm.