This document discusses various environmental and occupational health hazards that can impact childhood development. It notes that studies have found hundreds of chemicals present in umbilical cords, and that breastfeeding mothers can pass toxins to infants through breast milk. Various chemicals like lead, mercury, pesticides and BPA are discussed in terms of their negative health effects. Low-income communities and communities of color often face disproportionate exposure to workplace and environmental health risks. The document provides some tips for reducing exposure and becoming more informed consumers.