Yes, WIC works. Children lead healthier lives because WIC provides supplemental foods and emphasizes nutrition education during pregnancy, lactation, and early childhood. National studies show that WIC has a positive impact on reducing low birth weight, saving on Medicaid costs and encouraging pregnant women to seek early prenatal care. Studies also show WIC participants consume larger amounts of important nutrients such as iron, protein, calcium, and vitamin C. Children participating in WIC are better immunized and more likely to have a regular source of medical care.