Milk, Science, and Learning to Talk Like a Dietitian
Milk, Science, and Learning to Talk Like a Dietitian If you had asked me a year ago what I knew about milk, I probably would have said it has calcium, it has protein, and some people are lactose intolerant. That was pretty much it. I grew up drinking it, I drank plenty of it as an athlete, and I never really thought twice about it. That changed more recently when I started working with Orgain in September. They had just launched an A2 protein shake, and I kept hearing the term “A2” without really knowing what it meant. Now I’m working with the a2 Milk Company (full transparency!), and I’ve learned more about milk than I ever expected to. The science behind it is really interesting. Stick with me. Cow’s milk protein is made up of about 80% casein and 20% whey. Beta-casein makes up roughly a third of that casein, and it comes in different variants, the two most common being A1 and A2. What surprised me most is that they differ by just one amino acid (out of 200+!). At position 67 of the ...