Milk based infant formulas contain whey proteins as one of their main ingredients. Whey protein, a mixture of the proteins naturally found in milk, is more rapidly digested than some other proteins. This makes it an ideal protein for infant formula since babies' digestive systems are delicate.

In some infant formulas, 100% of the protein in the formula is whey protein. The brands that use 100% whey protein claim that this makes the formula very easily digestible. Other formulas use a combination whey protein and casein protein which is similar to breast milk.

Both types of formula partially break down the proteins in the formula. Partially breaking down the proteins before they are given to the baby can make them even easier to digest.

Why is whey protein important in infant formula?

First of all it is found naturally in breast milk. Infant formulas try to be as close to breast milk as possible.

Secondly, protein is one of the most important nutrients for building strong, healthy muscles. A baby's muscles and organs grow quickly, and the whey protein in formula helps facilitate their growth.

Finally, the body uses protein to make antibodies and hormones. Whey protein in infant formula helps to strengthen a child's immune system. It also helps produce important hormones.

When used as an ingredient in infant formula, whey protein helps a baby to grow strong and healthy. It is an essential ingredient in milk based infant formulas.