When it comes to protein, whey is King. Whey protein is a fast-absorbing protein found in milk and boasts a very high biological value, meaning that the majority of the amino acids found in whey are absorbed and utilized by the body. When muscles are hungry from an overnight fast or after a tough workout, whey protein is the perfect choice to feed them quickly. Whey protein also contains immunoglobulins and lactoglobulins, which have been shown to possess immune boosting properties. Because it’s derived from milk, whey protein shakes often have a creamy, rich taste.
The most common types of whey protein are whey protein concentrates, whey protein isolates and whey hydrolysates (hydrolyzed whey). Whey concentrates are 80% protein by weight and often slightly higher in fat and carbs, making them creamier and less expensive. Whey protein isolates are 90% protein by weight and contain less fat and carbs than concentrates, making them an ideal choice for dieters or those trying to shed pounds. Whey protein hydrolysates are whey fractions that have been “hydrolyzed,” or pre-digested so they are more rapidly absorbed.