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Reproductive and developmental hazards.

Many factors can affect reproductive health and the ability to produce healthy children for both men and women. The objective of these guidelines is to ensure that students and staff working in research laboratories understand that these factors might include exposure to chemicals, which are reproductive and developmental toxins. Reproductive toxins include chemicals that affect reproductive capabilities. These are chemicals that can cause menstrual dysfunction, impaired fertility, feminization or masculinization, or inability to maintain a pregnancy. Developmental toxins include chemicals that can cause adverse effects on the developing fetus that may occur anytime from conception to sexual maturity. The effects may include spontaneous abortion, structural or functional defects, low birth weight or effects that appear later in life. The key consideration with reproductive and developmental toxins is that exposures during a critical period may result in long-term health effects.