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Consanguineous marriage in Iran
M Saadat1, M Ansari-Lari, D D Farhud
1Department of Biology, College of Sciences, Shiraz University, Iran. saadat@susc.ac.ir
Annals of Human Biology
|June 19, 2004
Summary
Consanguineous marriage remains prevalent in Iran, affecting 38.6% of couples, with first cousin unions being most common. These patterns vary significantly across ethnic groups and socioeconomic status, highlighting a need for genetic counseling services.
Area of Science:
- Genetics
- Anthropology
- Public Health
Background:
- Consanguineous marriage is a significant aspect of family structures in Southwest Asia.
- Understanding current consanguinity rates is crucial for assessing genetic counseling needs.
Purpose of the Study:
- To determine the prevalence and patterns of consanguineous marriage in Iran.
- To analyze variations in consanguinity across different ethnic and religious populations.
- To evaluate the implications for genetic counseling services.
Main Methods:
- A multi-stage sampling design was employed.
- Data were collected from 306,343 couples across 12 ethnic/religious groups in Iran.
- Prevalence and patterns of consanguinity were analyzed, including inbreeding coefficient and types of unions.
Main Results:
- The overall rate of consanguineous marriage was 38.6%, with a mean inbreeding coefficient of 0.0185.
- First cousin marriages constituted 27.9% of unions, with a preference for parallel patrilateral marriages.
- Significant variations in consanguinity rates were found between ethnic/religious groups, geographical regions, and Sunni/Shi'a populations, with higher rates in less affluent groups.
Conclusions:
- Consanguinity is widespread in Iran, with notable ethnic and socioeconomic disparities.
- The high prevalence and specific patterns necessitate targeted genetic counseling strategies.
- Further research into the genetic implications of these consanguineous unions is warranted.