Book excerpt: Ch. 1. Toxicology 101 -- ch. 2. What's the risk -- ch. 3. The risk exercises -- ch. 4. Introduction to the immune system -- ch. 5. How the immune system develops -- ch. 6. The special conditions of pregnancy and the immune system -- ch. 7. The healthy immune system at work -- ch. 8. The dysfunctional immune system and its features -- ch. 9. Avenues for immune exposure -- ch. 10. Diseases stemming from prenatal and early life toxic exposures -- ch. 11. The disease progression matrix -- ch. 12. Categories of environmental, physical and psychological factors -- ch. 13. Prenatal strategies for preventing immune system damage -- ch. 14. Strategies to use during the first few years of life -- ch. 15. Undoing the damage of the past in adulthood -- ch. 16. Top 25 risks -- ch. 17. Other risk factors -- ch. 18. Postnatal triggers of disease - infections -- ch. 19. Postnatal triggers of disease - vaccinations -- ch. 20. Dietary factors that affect the immune system -- ch. 21. Hygiene and pets -- ch. 22. Developmental immunotoxicity testing - past, present and future