Is there any peer reviewed data evidence on dirty inbreeding, creepy incest, dysfunctional cousin marriages with the Amish in USA and do they marry/ breed with non Amish ?- Genetic effects ?
Yes, there is data and research regarding inbreeding, cousin marriages, incest, and marriage patterns among the Amish in the USA.
Here's a breakdown of the key points based on academic studies and genetic research:
1. Inbreeding and Cousin Marriages
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Yes, the Amish do have a higher rate of consanguinity (marriage between blood relatives) than the general U.S. population, but close inbreeding (e.g., sibling or parent-child incest) is extremely rare and heavily taboo.
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Cousin marriages, particularly second cousins or more distant, are not uncommon and generally permitted within many Amish communities.
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First cousin marriages are much less common and are often discouraged, although not always forbidden, depending on the church district.
Why this happens:
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The Amish population is a genetic isolate, descending from about 200 founders who immigrated to the U.S. from Switzerland and Germany in the 1700s–1800s.
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The current population of over 375,000 is descended from this small group, so the gene pool is limited.
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Genetic bottlenecks and endogamy (marrying within the group) naturally increase the chance of recessive genetic disorders.
🔸 2. Genetic Disorders Related to Inbreeding
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Certain rare genetic disorders are more common among the Amish due to founder effect and inbreeding, such as:
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Ellis-van Creveld syndrome (extra fingers, dwarfism)
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Glutaric aciduria type I
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Crigler–Najjar syndrome
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These conditions are monitored through special Amish-specific genetic clinics, especially in Pennsylvania and Ohio.
🔸 3. Do Amish Marry Non-Amish?
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Generally, Amish do not marry outsiders ("English" in their terminology).
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For an outsider to marry an Amish person, they would need to:
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Convert to the Amish faith
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Join the Amish church
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Fully adopt the lifestyle, which is difficult and rare
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Conversion happens, but it's uncommon—only a small percentage of outsiders successfully join.
🔸 4. Is There a Problem with Incest?
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There is no widespread evidence or data suggesting that incest (as defined by sexual relations between close kin, like siblings or parents) is a systemic issue among the Amish.
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As in any community, isolated abuse cases can occur, but the Amish are known to handle issues internally, which sometimes results in underreporting.
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Sociological critiques have been raised about accountability and justice in some cases, especially related to abuse within tight-knit, insular communities.
🔸 Summary:
Topic | Amish Practice/Pattern |
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Inbreeding | Elevated due to limited founders; not extreme |
Cousin Marriage | Often allowed; first cousins less common |
Incest | Strongly taboo; no data suggesting it's common |
Marrying outsiders | Very rare; outsider must convert and be baptized |
Genetic effects | Higher rates of certain recessive disorders |
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