What is it?

Whey and casein protein are both derived from milk. Whey protein powder is extremely popular due to its high digestibility and well-researched muscle-supporting benefits. Whey is most often a byproduct of cheesemaking. Whey’s dry mass is 75% carbs (lactose), 13% protein, and 1% fat. Whey protein is highly bioavailable and has an excellent amino acid profile. Whey protein is 52% essential amino acids and 13.6% leucine, whereas other animal-based proteins from foods are roughly 40–45% essential amino acids and 7–8% leucine, and plant-based proteins are even lower than that. 

What does it do?

It’s a high-quality, well-absorbed source of protein that’s very useful for hitting targeted daily protein goals. Its benefits extend to the benefits of increased protein intake in general, such as augmenting muscle gain in conjunction with resistance training, limiting muscle loss during low-calorie diets, and modestly limiting fat gain during periods of excessive calorie intake

Whey and casein protein are both derived from milk. Whey protein powder is extremely popular due to its high digestibility and well-researched muscle-supporting benefits. Whey is most often a byproduct of cheesemaking. Whey’s dry mass is 75% carbs (lactose), 13% protein, and 1% fat. Whey protein is highly bioavailable and has an excellent amino acid profile. Whey protein is 52% essential amino acids and 13.6% leucine, whereas other animal-based proteins from foods are roughly 40–45% essential amino acids and 7–8% leucine, and plant-based proteins are even lower than that.