ARC Journal of Nutrition and Growth (AJNG) Volume 1, Issue 1, July – September 2015, PP 29-33 www.arcjournals.org ©ARC Page | 29 A2 milk: The Healthier Choice but Unawared *Bandana Chatterjee, Tinkal Patel Research and Development Department Flourish Pure Foods Pvt. Ltd. Abstract: Milk is an outstanding source of Nutrients and we can say that it is a complete diet Accept Iron and Vitamin C. Milk is a very good source of Calcium and Protein. We all know about the present vitamins and other important nutrients in milk but the unknown truth about the milk that we wanted to put light on A1 and A2 milkl in this review paper. The A2 is a type of protein that is present in the Indian breed cow. This research done by Keith Wood ford a scientist who first declared the study on A2 milk The main purpose behind this article is to make people aware about the A2 milk and their benefits. Keywords: A2 milk, Digestive system,Gastrointestinal facts,Type 1 diabetes, Heart disease, Death of Infants. 1. INTRODUCTION Milk is about 80% of water. The remaining 15% is the milk sugar lactose,protein, fat and minerals. The Protein is 80% casein and 20% Whey. Beta casein is 30% of the total protein content in the milk,or about 30% of the total protein content. Milk from breeds of cows that originated in Northan Europe is generally high in A1 beta casein that breeds like the Holstein,Ayrshire and British shorthorn[1].The beta casein from cows milk called as A2 beta casein. Mainly A2 beta casein comes from the breeds like Guernsey, Jersy, Charolais and Limousin.A2 beta casein have produced since before they were first domesticated. Milk From dairy cows has long provided a high quality source of protein and selected micro-nutrients such as calcuim to most populations[2].Recently a relationship between diseases risk and consumption of a specific bovine ss casein fraction either A1 or A2 genetic variants has been identified. It is considered safe and nutritious and has no known negative effects on human health. In the past few years, a naturals mutation occurred in some European dairy herds that changed the beta casein they produced. The gene encoding beta casein was changed such that the 67 th amino acid in the 209 amino acid chain that is the beta casein protein was switched from Proline to Histidine. This new kind of beta casein that was created is known as A1 beta casein and is generally more common in many of the big black- and - white cow breeds of European decent such as the Holstein and Friesian, Due to their size milk production and demeanor.These Breeds of cow are used to produce the vast majority of Northern Europe and America's milk.Now, we will discuss the difference and the benefits of using A2 milk[3,4]. Fig 1. Structure of A1 and A2 beta casein Protein