What is the difference between whey and casein? - ProProfs Discuss
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What is the difference between whey and casein?

Asked by R. Jones, Last updated: May 22, 2020

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5 Answers



Answered Sep 13, 2019

Casein protein:

1. This is the most popular form and is digested slowly.

2. Casein has about 19 amino acids

3. Best used before bed.

Whey protein:

1. This form is predigested and rapidly absorbed.

2. Whey protein has about 9 amino acids

3. Most effective post-workout.


A. Daniels

A. Daniels, Professor, San Diego

Answered Sep 11, 2019

Different minerals have been discovered on earth, and some of them are more popular than others. This time, the two terms rutile and anatase refer to Titanium dioxide. These are two different types of Titanium dioxide that show some differences depending on their appearance.

Rutile is known to be deep red while anatase can be colored yellow. Some are color blue. Rutile is known to be more effective for absorbing as compared to anatase. These two are used to help in pigmentation, which explains why they can be the ingredients in certain products that can be found in the market.


C. Bernthal

Its kind of my job to give answers

C. Bernthal, Teacher, MA, P.hD, Seattle

Answered Aug 29, 2019

Whey is the liquid remaining when milk has been curdled and strained in the process of making cheese. Whey is quickly absorbed in the digestive system, making it a better option for workout and muscle building. It contains a high amount of branched-chain amino acids such as valine, leucine, and isoleucine.

Whey is rich in immunoglobulin Casein is a form of protein present in both milk and in the seeds of leguminous plants. Casein is slowly absorbed in the digestive system. It contains a high amount of amino acids such as phenylalanine, histidine, and methionine. Casein has bioactive peptides that help boost the immune system, digestive system, and control blood pressure.


J. Pollock

J. Pollock, Science Professor, Los Angeles

Answered Jul 31, 2019

Whey is absorbed in the digestive system quickly, whereas casein is absorbed slowly and steadily. Whey and casein are both dairy proteins found in milk. Whey digests quickly, which makes it ideal for workouts and muscle growth. Casein is existent in milk curds, while whey protein is located in the liquid portion of milk. Since casein takes an extended time to digest, the protein it releases into the body lasts for a long time.

Also, it relinquishes a sustained release of amino acids. Whey protein contains more sulfur than casein. Compared to casein, whey is a fast source, which means it provides amino acids quickly after ingestion. Even though more people are allergic to whey, conclusions of long- term studies demonstrate that whey is the better choice.


J. Harty

Have keen interest in writing, traveller by heart.

J. Harty, Writer, M.A, Chula Vista

Answered Jul 18, 2019

Both whey and casein are types of protein. They both come from milk, with whey being 20% of the cow's protein, and casein being 80% of the protein. When it comes to building muscle, whey protein is better. This is because it is quickly absorbed. They both contain bioactive compounds, but the compounds they offer are different.

Whey has immunoglobulins, which help build the immune system. Casein has bioactive peptides, which help build the digestive system and lower the blood pressure. In a calorie breakdown, why has lesser calories, containing only 110 calories while casein has 120 calories. Whey also has less carbohydrates than casein.


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