a2 Milk™ for healthcare professionals

Developed for healthcare professionals


This website has been developed by The a2 Milk Company to set out the research behind the A1 and A2 beta-casein protein variant types and is regularly reviewed so that it continues to provide up-to-date information on the latest research.

This resource centre also provides evidence-based information on paediatric health and nutrition, CPD tools, resources and patient handouts.

The A1/A2 difference

Beta-casein science
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*A1 and A2 proteins refer to A1 and A2 beta-casein protein types

a2 Milk™ is a trade mark of, and brand of A1 protein-free milk from, The a2 Milk Company Limited

An association between consumption of 3 serves of dairy foods containing A1 beta-casein and digestive discomfort, in some individuals, has been established by a process of systematic review. The NHMRC recommends a healthy diet including up to 4 serves of dairy foods/day.