Internal migration

Internal migration has been studied in 4 papers since 2021: 4 observational studies in people; 2 in the past year. The newest story, Nov 6, 2026: “Heat linked to higher respiratory death risk in Brazilian migrants”.

Exposure

4 papers study it4 findingsUpdated

1 new paper in 30 daysSee all 4 papers on internal migration

At a glance

The findings reach people, from one lab or study. 2 independent labs in 3 countries.

“Multivariate analyses revealed that individuals with early-life migration experiences had higher baseline prevalence and a faster accumulation of chronic diseases over time.”
How early migration shapes chronic disease progression in later life: longitudinal evidence from rural ChinaThe journals of gerontology. Series B, Psychological sciences and social sciences2026doi:10.1093/geronb/gbag061

None of its findings points the other way.

Humans: a single group. Cells, worms or flies and mice: nothing yet.
  • 2 independent labs in 3 countries
  • Funders: European Commission and others
  • Humans4

What did studies of internal migration find?

2

Studies of internal migration measured 2 outcomes; the most studied are chronic disease (1 study) and longevity (1).

Chronic disease

upin humans1

1 study
  1. Internal migration is linked with higher chronic disease in rural older adults.

    “Multivariate analyses revealed that individuals with early-life migration experiences had higher baseline prevalence and a faster accumulation of chronic diseases over time.”

    Humansin rural older adults2011-2020

    How early migration shapes chronic disease progression in later life: longitudinal evidence from rural China

    The journals of gerontology. Series B, Psychological sciences and social sciences

More on Chronic disease

Longevity

upin humans1

1 study
  1. Internal migration is linked with better longevity in humans.

    “more pronounced for those who move above age 60 and small or negative for those who move at prime working ages”

    Humans

    Internal migration, health selection, and the salmon bias: A register-based study of Finland

    Social science & medicine (1982)

What is internal migration linked with?

2

Studies link internal migration with 2 measures, most often chronic disease (1 study) and mortality (1).

Chronic disease

upin humans1

1 study
  1. Internal migration is associated with chronic disease in humans (more frequent, earlier, and longer-distance moves).

    “More frequent, earlier, and longer-distance migration were each linked to worse health trajectories.”

    Humansmore frequent, earlier, and longer-distance moves2011-2020

    How early migration shapes chronic disease progression in later life: longitudinal evidence from rural China

    The journals of gerontology. Series B, Psychological sciences and social sciences

More on Chronic disease

Mortality

downin humans1

1 study
  1. Internal migration is linked with a lower risk of mortality in humans.

    “both leavers and returnees enjoy a mortality advantage over non-migrants”

    Humans

    Internal migration, health selection, and the salmon bias: A register-based study of Finland

    Social science & medicine (1982)

Latest

Dec 2025: 0Jan 2026: 0Feb 2026: 0Mar 2026: 0Apr 2026: 1May 2026: 0Jun 2026: 0Jul 2026: 0Aug 2026: 0Sep 2026: 0Oct 2026: 1Nov 2026: 02 papers in 12 months
Lancet Regional Health Americas

Heat linked to higher respiratory death risk in Brazilian migrants

Against the temperature linked to lowest mortality, extreme heat was associated with respiratory death relative risks of 1.32 among internal migrants and 1.06 among…Against the temperature linked to lowest mortality, extreme heat was associated with respiratory death relative risks of 1.32 among internal migrants and 1.06 among non-migrants.

Case-control study in peopleRespiratory disease