Today, the beta-casein found in cow’s milk is present in one of two variants: A2 beta-casein and A1 beta-casein. Originally, cow’s milk only had the A2 beta-casein protein present (A2/A2) – which is the same primary protein found in human milk. Because of this, A2 beta-casein is most natural to the human body and more easily absorbed.

However, the protein in cow’s milk has changed throughout time. At some point, there was a genetic mutation in the A2 beta-casein protein that created the A1 beta-casein variant, which has resulted in most commercially available cow’s milk today to become a mixture of A1 and A2 beta-casein (A2/A1). Unfortunately, the A1 beta-casein can be difficult for humans to digest and is linked to inflammation, gut discomfort and many other health issues.

Holle A2 milk is great because, like human breast milk or goat milk, it lacks A1 beta-casein protein and instead has mostly the A2 protein, which comes from specially selected cows that exclusively produce the A2 beta-casein protein. Holle A2 milk can reduce natural inflammations, improve digestive issues, and reduce gastrointestinal discomfort. If your baby is a bit sensitive to regular cow’s milk based formulas, then switching to an A2 protein milk formula allows for a traditional milk substitute that isn’t goat’s milk.