Why It's So Hard to Make a Better Baby Formula

(Credit: Odua Images/Shutterstock) Scan the aisles of any grocery store, and you'll find a plethora of infant formula options, all designed to meet the nutrient needs of growing infants, who nearly triple their body weight in the first year of life. And yet researchers and companies are busy testing new formulations all the time. That's in part because much has changed in our understanding of breast milk's complexities over the decades -- from early knowledge of its nutrient composition to