Studies show that some of the most common baby foods manufactured in the United States contain traces of arsenic, lead and mercury. Exposure to these heavy metals can interfere with a child’s brain development and affect  learning, cognition, behavior and attention. While your child’s exposure to heavy metals from baby food is likely small compared to other sources, it’s still important to minimize exposure from all sources -- and that includes food. UH Rainbow pediatrician Aparna Bole, MD, tells us how.