Hummer Melvin He

Overview of Immigration Health and Mortality

Immigrant population growth over 50 years, becoming diverse.
Focus on immigrant health and mortality is crucial in social science and epidemiological research.
Immigrants initially healthy but health declines over time in the host country and second generation.

Migration: Permanent change in residence across boundaries.
Immigration: Permanent movement across national boundaries to a host country.
Emigration: Leaving a country to live permanently elsewhere.
Nativity: Distinction between foreign-born (immigrant) and native-born individuals.
Health Selection: Immigration of healthy individuals; unhealthy individuals tend to return.
Epidemiologic Paradox: US Hispanics show better health outcomes compared to expected based on socioeconomic status.
Immigrant Incorporation: The extent of social, economic, and cultural integration into the host society.

Past research compared health of immigrants to both nonmigrants in their origin countries and native-born in host country.
Studies show initial favorable health patterns erode with prolonged residence in the host country, particularly among Hispanic populations.
Recent interest in health patterns among various immigrant groups due to increasing diversity.

Studying mobile populations is challenging due to their geographic movement.
Language barriers complicate survey participation and validity.
Health assessment difficulties, notably for undocumented immigrants.
Research must adapt to account for dynamic nature of immigrant populations and incorporation experiences.

Immigrants generally exhibit lower mortality rates compared to native-born populations.
Infant mortality rates among foreign-born mothers are lower than native-born counterparts, though this advantage diminishes with longer residency.
Foreign-born populations, especially Black and Hispanic immigrants, show significantly lower all-cause adult mortality rates.
Patterns of mortality and health show that extended time in the host country can lead to increased mortality rates and health deteriorations.

Immigrants tend to engage in healthier behaviors upon arrival but these diminish over time.
Smoking and alcohol use are lower among immigrants compared to the native-born population.
Poor health behaviors become prominent as immigrants adapt to the host culture.

Positive Health Selection: Healthier individuals are more likely to migrate; significant health differences exist between immigrants and nonmigrants in their countries of origin.
Incorporation and health trajectory evolve as immigrants adapt to new environments; both health improvements and deteriorations can occur based on socio-legal contexts.

Increased focus on the diverse backgrounds of immigrant populations; research on undocumented immigrants is essential.
Need for three-way comparisons among immigrants, nonmigrants, and native-born individuals for a complete understanding of immigrant health dynamics.