Method to increase the growth velocity of human infants

A method to increase the growth velocity of a pre-term human infant, said method comprising the steps of:

• i. providing a modified infant formula or modified pasteurized breast milk by the method comprising:
• providing a first quantity of recombinant human bile-salt-stimulated lipase and a second quantity of an unmodified infant formula or unmodified pasteurized breast milk;
• and
• adding an amount of said lipase to said unmodified infant formula or unmodified pasteurized breast milk so as to form a modified infant formula or modified pasteurized breast milk, that includes an amount of lipase effective to increase the growth velocity of a human infant when said modified infant formula or modified pasteurized breast milk is fed to said infant over at least one feed per day over approximately 4 or more days;
• ii. feeding the modified infant formula or modified pasteurized breast milk so prepared or otherwise provided to said pre-term infant to said pre-term infant such that 1 to 100 mg per kg of infant of a recombinant human bile-salt-salt stimulated lipase is administered and, wherein said infant is from about 21 to 37 weeks of gestation.