Cardiometabolic risk was already widespread among never-migrant P'urépacha adults in migrant-sending communities, with age and sex consistently associated with outcomes while commonly used sociocultural indicators such as language proficiency and cultural identification were not independently associated with cardiometabolic health.
Cardiometabolic risk was widespread among never-migrant P'urépacha adults in migrant-sending communities in Michoacán, Mexico.
Age and sex were consistently associated with cardiometabolic risk in multivariable analyses.
Bivariate differences in cardiometabolic outcomes by language group disappeared after adjustment for age.
Commonly used sociocultural indicators were not independently associated with cardiometabolic outcomes.
Ethnographic observations revealed that cardiometabolic risk is embedded within the everyday food environments of indigenous migrant-sending communities.
The study challenges the assumption that pre-migration indigenous community contexts are culturally traditional and implicitly protective against cardiometabolic risk.
This research suggests that indigenous P'urépacha communities in Michoacán, Mexico—communities that send many migrants to other regions—already have very high rates of cardiometabolic disease even among people who have never migrated. Three in four participants were overweight or obese, nearly three in five had high blood pressure, and over three in four met the criteria for metabolic syndrome. These findings directly challenge a common assumption in migration health research: that indigenous or rural origin communities are 'traditional' and therefore healthier, and that migrants develop health problems only after they leave home. The study also found that standard sociocultural measures researchers often use—such as how strongly someone identifies with their indigenous culture, how well they speak the indigenous language, their income, or their stress levels—were not meaningfully linked to cardiometabolic health once age and sex were taken into account. Instead, the researchers suggest that the shared food and social environment of the community itself may be the more important factor shaping everyone's health, regardless of their individual cultural identity or economic situation. This research matters because it shows that studies comparing migrants' health to that of people 'back home' may be using an inaccurate baseline if they assume origin communities are healthy. By using a combination of biological measurements, surveys, and on-the-ground observations of local food environments, the study demonstrates that cardiometabolic risks are already deeply embedded in these communities before any migration occurs. This has implications for how public health researchers design studies and how health interventions might need to focus on community-wide environmental factors rather than individual cultural markers.
Cruz I, Thompson A. (2026). Cardiometabolic Health in P'urépecha Migrant-Sending Communities in Michoacan, Mexico.. American journal of human biology : the official journal of the Human Biology Council. https://doi.org/10.1002/ajhb.70319