What is A2 milk?

A1 and A2 are variants of the beta-casein proteins that are naturally found in cow’s milk. While most milk contains both of these variants, A2 milk comes from cows that only produce the A2 beta-casein variant.

Due to negative speculation regarding the health effects of A1 beta-casein, the European Food Safety Authority conducted a scientific review of the evidence. In 2009, this research concluded that any negative relationship between A1 proteins and non-communicable diseases could not be established and that further investigation was not warranted. Due to lack of demand, A2 milk is not commercially available in Ireland.