Nine chapters and index, evidence-based textbook, with citations of references or websites. Chapters :1. Who is coming from where? 2. Consequences of leaving nativity region. 3. Adverse health effects of American acculturation. 4.Mortality by ethnicity. 5.Ethnicity and drug response. 6.Immigration & women, pregnancy and children. 7.Health maintenance and promotion. 8. Travel Medicine. 9. Synthesis and recommendations.