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Health See other Health Articles Title: Could a2 Milk Solve Lactose Intolerance Symptoms For Some? Susan, a 4-year-old Holstein from Prairieland in Nebraska, carries only the A2 protein. Most dairy cows carry both the A1 and A2 proteins - and some scientists believe it's the A1 protein that upsets the bellies of some milk drinkers. Prairieland Dairy A new of brand of milk arrives at some California grocery stores this month as its makers pin their market hopes on a controversial theory that one tiny protein may be the culprit behind some people's dairy-induced tummy troubles. The beverage is called a2 Milk — a direct nod to a single protein, called A2, now fueling scientific debate. Pasteurized and free of growth hormones and antibiotics, a2 Milk already is filling the glasses of folks in New Zealand, Britain and Australia. It doesn't taste any different or pack any more nutritional punch than the cow's milk in your refrigerator, say its makers, the a2 Milk Company, based in New Zealand. But the product does contain the A2 protein. And some research suggests A2 is beneficial for people who feel queasy and bloated after drinking dairy, but who aren't truly lactose intolerant. In fact, the inclusion of that particular protein makes a2 Milk resemble, chemically speaking, the cow's milk people were drinking many centuries ago. The company contends that it's not lactose that gives some people dairy-related digestive issues — rather, it's yet another protein called A1 that's typically present in store-bought milk. NBC News A1 MILK PROTEIN emerged thousands of years ago due to a natural genetic mutation within European dairy herds, said Andrew Clarke, chief scientific officer at the a2 Milk Company Other mammals, including female humans (think breast milk), produce milk containing only the A2 protein. Because that DNA mutation was associated with high-milk producing breeds, A1 spread throughout cows in Europe and the United States. Today, dairy herds in the U.S. and Europe, among others, are generally comprised of cows that carry both the A1 and A2 proteins, though some cows may be purely A1 and others purely A2. The so-called "old world cows," namely those in Africa and Asia, continue to produce only the A2 protein, said Clarke. Post Comment Private Reply Ignore Thread
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