Researchers analyzed the food intake of nearly 1,500 babies in the United States and found that about 16% of parents fed their child complementary foods before the age of four months, and about 38% provided their son or daughter solids or other drinks by five months of age. Lead investigator Dr. Chloe Barrera warns, “Introducing babies to complementary foods too early can cause them to miss out on important nutrients that come from breast milk and infant formula.” Academy of Nutrition and Dietetics, January 2018