Whey protein has a very high nutritional value, and is one of the best dietary sources of high-quality protein. It is highly digestible, and absorbed quickly compared to other proteins.

Whey protein is excellent for promoting muscle growth and maintenance when coupled with strength training.

Whey proteins may lower blood pressure in people with elevated blood pressure. This is due to bioactive peptides called lactokinins.

Whey protein is effective at moderating blood sugar levels, especially when taken before or with high-carb meals. It may be particularly useful for people with type 2 diabetes.

High doses of whey protein have been shown to reduce blood levels of C-reactive protein, indicating that it can help reduce inflammation.

Whey protein supplements may have beneficial effects on inflammatory bowel disease.

Whey protein supplementation may strengthen the body's antioxidant defenses by promoting the formation of glutathione, one of the body's main antioxidants.

Long-term, high-dose whey protein supplementation may lower cholesterol levels. The evidence is very limited at this point.

Whey protein is very satiating (filling), even more so than other types of protein. This makes it a useful addition to a weight loss diet.

Eating plenty of protein is a very effective way to lose weight, and some studies show that whey protein may have even greater effects than other types of protein.