A2A2

The two most common types of beta casein proteins found in milk are A1 and A2. Breeds of cows like the Guernsey, can be bred to produce milk without the A1 gene: A2A2 milk.

A2A2 milk is produced only from cows and sold at various grocery stores for its unique digestive capabilities.

W H Y I S T H I S I M P O R T A N T ?

The two proteins are digested differently, and some stomachs have a sensitivity to the A1 protein, causing problems with digestion.

Many people who think they are reacting to the lactose in milk, are actually reacting to the A1 protein!

Learn more about the Guernsey cow at usguernsey.com