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Milk types

What are the nutritional differences between A2 and A1 cow milk?

By Drinks Type Editorial TeamPublished Jul 25, 2025Updated Nov 5, 20261 min read
Quick answer

A1 and A2 milk differ in the type of beta-casein protein, not in the main nutrients. We found no official source that lists different calories, calcium or protein for A2 milk. FAO reports that EFSA could not establish a cause-effect link between a beta-casein peptide (BCM7) and disease.

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In this article
  1. What is the difference between A1 and A2 milk?
  2. Do A1 and A2 milk have different nutrition?
  3. Is A2 milk healthier?
  4. Which milk should I choose?

What is the difference between A1 and A2 milk?

Both are cow’s milk. They differ in the form of beta-casein, one of the milk proteins. Milk labeled A2 is sold as containing only the A2 form.

Do A1 and A2 milk have different nutrition?

We found no official source (FAO, EFSA, NHS, USDA) that reports a nutrient difference between A1 and A2 milk. For ordinary cow milk, FAO gives average values per 100 g: 62 kcal, 3.3 g protein, 3.3 g fat and 112 mg calcium. Check the nutrition panel of your own carton, because fat level and brand matter more than the protein type.

Is A2 milk healthier?

FAO notes that some milk-derived peptides are being studied. It cites EFSA’s review of beta-casomorphin-7 (BCM7), a peptide from beta-casein, and quotes the conclusion that “a cause-effect relationship between the oral intake of BCM7 or related peptides and aetiology or course of any suggested NCDs cannot be established.”

Which milk should I choose?

We found no official guidance recommending A2 over regular milk. If milk upsets your stomach, the cause may be lactose intolerance or a milk allergy, and both need a doctor’s advice. Ask a doctor or pharmacist before changing your diet for a health reason.

People also ask

What is the difference between A1 and A2 milk?

They contain different forms of the protein beta-casein. No official source we found reports a difference in the main nutrients.

Is A2 milk better for you than regular milk?

We found no official source saying so. FAO reports EFSA could not establish a cause-effect link between the BCM7 peptide and disease.

Does A2 milk have a different nutrition panel?

We found no official data showing that. Read the label of your carton, as fat level and brand change the numbers.

General information only, not medical advice. If you have a health condition or are pregnant, ask your doctor before changing what you drink.

Sources

  1. FAO: Milk and dairy products in human nutrition (2013), read 5 Nov 2026
Written by Drinks Type Editorial Team · Published Jul 25, 2025 · Updated Nov 5, 2026
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