The main difference between regular milk and A2 milk is that regular milk contains both A1 and A2 (forms of beta-casein), whereas A2 milk may contain only A2 beta-casein.

According to some studies, A1 milk may trigger certain diseases, whereas A2 milk is generally beneficial to overall health. While most cows produce a combination of A1 and A2 beta-casein, A2 milk is obtained from cows that naturally produce only A2 beta-casein due to a genetic mutation.

Is A2 healthier than regular milk?

Milk is a good source of protein and calcium. Milk protein is converted to peptides that are then converted to amino acids. The science behind how a single amino acid affects human health, however, is not fully understood. Beta-casomorphin-7 (BCM-7) is an opioid peptide that triggers inflammatory changes in the cells and contributes to diabetes or other diseases. It is believed that regular milk (with mostly A1 beta-casein) produces BCM-7 during digestion that can alter gastrointestinal function and increase inflammation in the gut. However, proline (an amino acid) in A2 milk restricts BCM-7 from entering your body. A2 milk is easier to digest than regular milk and, thus, is safe for the human body.