Researchers from the CDC analyzed data from 13,155 women who had children with birth defects. They found statistically significant correlations with antibiotic use. Two classes were identified as the main culprits: sulfonamides and nitrofurantoins (commonly used to treat UTI’s e.g., Macrobid). Other classes of antibiotics such as penicillins, erythromycins and cephalosporins seemed safer and were …