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A1 vs A2 Cow’s Milk

Problem with Cow’s Milk: A1 Beta Casein Protein

Cow’s milk consists of both casein and whey protein. Casein makes up about 30 percent of the total protein in milk solids. There are different types of casein in the milk of dairy cows; essentially A1 and A2.

KETO Jersey cow n Holstein10 millenniums ago, A2 protein was the only “casein” found in cow’s milk. During recent two millennia, as the cows got domesticated, a natural mutation set off the production of A1 beta casein protein. Heavy-producing large breeds like Holsteins produce only A1 protein. As more and more Holsteins were adopted by dairies of Europe and the U.S., just about all cow’s milk produced and sold in the industrialized nations contains the A1 protein.

Some cows like Holsteins (black and white) produce only A1 protein .

Others produce both the A1 and A2 proteins due to cross-breeding.

For the most part, brown breeds such as Guernseys, Jersey cows, Brown Swiss, Normandes and those in Africa and India still produce A2 milk.

Some widespread conditions like common allergies and food intolerance  are from cow’s milk because of the hybridized proteins of A1 casein.

While some people react adversely to beta-casein A1, everyone does perfectly fine when consuming beta-casein A2.


Dairy products

KETO cheesesBy now, we all know that a low-fat or non-fat diet or a diet high in nasty trans fats weaken our immune system and can wreak hormonal havoc.

Healthful saturated fats from dairy products are essential for energy and hormone production. Antibiotic- and hormone-free full-fat dairy products are great source of nutrition for us. They provide cholesterol; the precursor to our hormonal pathways.  They also provide the the necessary protein which helps with the transporting thyroid hormone through the bloodstream to all our tissues.

Although plenty of non-dairy sources such as kale, collard greens, Chinese cabbage, broccoli, and almonds are high in calcium, dairy products are are the primary source of calcium for many people.

MyKetoPal’s ketogenic 180 Food Plan includes dairy products such as butter, heavy cream, sour cream, and cheese.

MyKetoPal’s ketogenic 180 Food Plan does NOT include any form of milk, whole, organic, conventional, raw or pasteurized/homogenized.



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