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The American [[Amish]] have low autism rates which may be due to their healthy and simple lifestyle, their genetic makeup or both.   

The American [[Amish]] have low autism rates which may be due to their healthy and simple lifestyle, their genetic makeup or both.   

David N. Brown, who states that: "In March 2006, Drs. Kevin Strauss, Holmes Morton and others documented 9 autistic Amish children, which could raise the autism rate of the Lancaster Amish community Olmsted supposedly investigated to almost 1/5,000 which is still a fraction of the US average of 1/68.<ref>Puffenberger, EG; Jinks, RN; Wang, H; Xin, B; Fiorentini, C; Sherman, EA; Degrazio, D; Shaw, C; Sougnez, C; Cibulskis, K; Gabriel, S; Kelley, RI; Morton, DH; Strauss, KA (Dec 2012). "A homozygous missense mutation in HERC2 associated with global developmental delay and autism spectrum disorder". Human Mutation 33 (12): 1639–1646</ref><ref> Jackman, C; Horn, ND; Molleston, JP; Sokol, DK (Apr 2009). "Gene associated with seizures, autism, and hepatomegaly in an Amish girl". Pediatric Neurology 40 (4): 310–313.</ref><ref> Alarcón, Maricela; Abrahams, Brett S.; Stone, Jennifer L.; Duvall, Jacqueline A.; Perederiy, Julia V.; Bomar, Jamee M.; Sebat, Jonathan; Wigler, Michael; Martin, Christa L.; Ledbetter, David H.; Nelson, Stanley F.; Cantor, Rita M.; Geschwind, Daniel H. (10 January 2008). "Linkage, Association, and Gene-Expression Analyses Identify CNTNAP2 as an Autism-Susceptibility Gene". American Journal of Human Genetics 82 (1): 150–159</ref>   

David N. Brown indicated: "In March 2006, Drs. Kevin Strauss, Holmes Morton and others documented 9 autistic Amish children, which could raise the autism rate of the Lancaster Amish community Olmsted supposedly investigated to almost 1/5,000 which is still a fraction of the US average of 1/68."<ref>Puffenberger, EG; Jinks, RN; Wang, H; Xin, B; Fiorentini, C; Sherman, EA; Degrazio, D; Shaw, C; Sougnez, C; Cibulskis, K; Gabriel, S; Kelley, RI; Morton, DH; Strauss, KA (Dec 2012). "A homozygous missense mutation in HERC2 associated with global developmental delay and autism spectrum disorder". Human Mutation 33 (12): 1639–1646</ref><ref> Jackman, C; Horn, ND; Molleston, JP; Sokol, DK (Apr 2009). "Gene associated with seizures, autism, and hepatomegaly in an Amish girl". Pediatric Neurology 40 (4): 310–313.</ref><ref> Alarcón, Maricela; Abrahams, Brett S.; Stone, Jennifer L.; Duvall, Jacqueline A.; Perederiy, Julia V.; Bomar, Jamee M.; Sebat, Jonathan; Wigler, Michael; Martin, Christa L.; Ledbetter, David H.; Nelson, Stanley F.; Cantor, Rita M.; Geschwind, Daniel H. (10 January 2008). "Linkage, Association, and Gene-Expression Analyses Identify CNTNAP2 as an Autism-Susceptibility Gene". American Journal of Human Genetics 82 (1): 150–159</ref>   

The Amish have high a fertility rate and in 2012 it was named the fastest growing faith group in the United States and was projected to grow to 1 million people by 2050.<ref>[http://www.csmonitor.com/USA/Society/2012/1130/For-Amish-fastest-growing-faith-group-in-US-life-is-changing  For Amish, fastest-growing faith group in US, life is changing]</ref>

The Amish have high a fertility rate and in 2012 it was named the fastest growing faith group in the United States and was projected to grow to 1 million people by 2050.<ref>[http://www.csmonitor.com/USA/Society/2012/1130/For-Amish-fastest-growing-faith-group-in-US-life-is-changing  For Amish, fastest-growing faith group in US, life is changing]</ref>