Question: what is the difference between regular milk and a2 milk?
Answer: Regular milk contains both A1 and A2 beta-casein, but A2 milk contains only A2 beta-casein. ... A2 milk is produced and marketed by the A2 Milk Company and contains no A1 beta-casein. SUMMARY A1 and A2 milk contain different types of beta-casein protein. Some studies indicate that A2 milk may be the healthier of the two.