What are different types of proteins?

There are several kinds of proteins from milk used as ingredients or supplements. Whey protein concentrate (WPC); whey protein isolate (WPI); hydrolyzed whey protein or hydrolyzates; “native” whey or milk whey; caseins and caseinates; micellar casein; milk protein concentrates; and milk protein isolates. Read more about these proteins here.

Slow vs. Fast:  There also are “slow” and “fast” proteins, categorized by how fast they are digested. Whey proteins are fast proteins, while casein proteins are slow proteins. They are both excellent quality, but they are used by your body at different rates.1  Both whey and casein are beneficial, it just depends on how fast you want to digest them.

Protein is a valuable multitasker and does many important things in your body. Getting enough protein can help with1:

  • Building lean muscle
  • Keeping you fuller, for longer
  • Energy and focus
  • Maintaining bone health
  • Maintaining a healthy weight and keeping excess weight off

In fact, protein is part of every cell in your body.2 That’s why protein is a nutrient many people want to get more of every day and often make it a priority to meet their daily protein requirements.

1 Frühbeck, G. Protein Metabolism. Slow and Fast Dietary Proteins. Nature. 1998 Feb 26;391(6670):843, 845.

2 Milk Life. High Protein Morning. https://milklife.com/high-protein-morning. Accessed April 17, 2020.