Cardiometabolic Profile and Outcomes in Migrant Populations: A Review of Comparative Evidence from Migrants in Europe in Relation to Their Country of Origin

BACKGROUND

The potential effect of migration on increasing cardiometabolic risk factors remains partially understood. We aim to synthesize the evidence comparing the burden of diabetes and adiposity of migrating populations in Europe, with that of their country of origin.

METHODS

We conducted a scoping literature review. We searched PubMed for studies investigating the effect of migration on diabetes or adiposity outcomes among migrants in countries from the European Union or the United Kingdom compared to the population in the country of origin. Studies were qualitatively synthesized in evidence tables and the demographic characteristics, study design, risk factors investigated, and outcomes were quantitatively summarized using measures of central tendency.

FINDINGS

Of 1175 abstracts retrieved, 28 studies were eligible. Most of the studies included migrating populations residing in Western (50%), Northern (39%), and Southern Europe (11%) originating from countries in Africa (46%), Asia (29%), or European overseas (25%) regions of which 85% were classified as low-middle-income countries. Most of the studies (93%) had a cross-sectional design. The median number of individuals in the country of origin was greater [917; IQR: 231-1378] than in the receiving country [249; 150-883]. Thirty-five percent of the studies investigated migration as an independent risk factor, whereas 28% contextualized migration into lifestyle changes. The majority of the studies (57%) reported both diabetes and adiposity outcomes. Within the limited evidence available, controversial results were found as some studies showed poorer outcomes for the migrating populations, while others showed the opposite.

CONCLUSION

Studies assessing the impact of migration by comparing migrating populations and the population of origin on diabetes and adiposity outcomes have gained interest. So far, the available evidence is highly heterogeneous to inform public health strategies in the receiving countries. We recommend further research including a more robust methodology and in-depth characterization of the migrant populations.

Comparison of Cardiovascular Risk Factors among Somalis Living in Norway and Somaliland

Objective: We aimed to assess and compare cardiovascular disease (CVD) risk factors and predict the future risk of CVD among Somalis living in Norway and Somaliland. Method: We included participants (20–69 years) from two cross-sectional studies among Somalis living in Oslo (n = 212) and Hargeisa (n = 1098). Demographic data, history of CVD, smoking, alcohol consumption, anthropometric measures, blood pressure, fasting serum glucose, and lipid profiles were collected. The predicted 10-year risk of CVD was calculated using Framingham risk score models. Results: In women, systolic and diastolic blood pressure were significantly higher in Hargeisa compared to Oslo (p < 0.001), whereas no significant differences were seen in men. The ratio of total cholesterol to high-density lipoprotein (HDL) cholesterol was significantly higher in Hargeisa compared to Oslo among both men (4.4 versus 3.9, p = 0.001) and women (4.1 versus 3.3, p < 0.001). Compared to women, men had higher Framingham risk scores, but there were no significant differences in Framingham risk scores between Somalis in Oslo and Hargeisa. Conclusion: In spite of the high body mass index (BMI) in Oslo, most CVD risk factors were higher among Somali women living in Hargeisa compared to those in Oslo, with similar patterns suggested in men. However, the predicted CVD risks based on Framingham models were not different between the locations.