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  2. Health among the Amish - Wikipedia

    en.wikipedia.org/wiki/Health_among_the_Amish

    The Amish are protected against many types of cancer both through their lifestyle—there is very little tobacco or alcohol use and limited sexual partners—and through genes that may reduce their susceptibility to cancer. Dr. Judith Westman, director of human genetics at OSUCCC – James, conducted the study.

  3. Inbreeding - Wikipedia

    en.wikipedia.org/wiki/Inbreeding

    Inbreeding coefficients of various populations in Europe and Asia. Offspring of biologically related persons are subject to the possible effects of inbreeding, such as congenital birth defects. The chances of such disorders are increased when the biological parents are more closely related.

  4. Finnish heritage disease - Wikipedia

    en.wikipedia.org/wiki/Finnish_heritage_disease

    Most of the gene defects are autosomal recessives, so that if both the mother and father carry the same defect, the chance that their child will have the associated disease is 1 in 4. The molecular genetics of many of these diseases have been determined, enabling genetic testing , prenatal testing , and counseling.

  5. Birth defect - Wikipedia

    en.wikipedia.org/wiki/Birth_defect

    Genetic causes of birth defects include inheritance of abnormal genes from the mother or the father, as well as new mutations in one of the germ cells that gave rise to the fetus. Male germ cells mutate at a much faster rate than female germ cells, and as the father ages, the DNA of the germ cells mutates quickly.

  6. Genetic purging - Wikipedia

    en.wikipedia.org/wiki/Genetic_purging

    Genetic purging is the increased pressure of natural selection against deleterious alleles prompted by inbreeding. [1]Purging occurs because deleterious alleles tend to be recessive, which means that they only express all their harmful effects when they are present in the two copies of the individual (i.e., in homozygosis).

  7. Extinction vortex - Wikipedia

    en.wikipedia.org/wiki/Extinction_vortex

    Inbreeding can lead to inbreeding depression within the population, and this can cause fewer offspring, more birth defects, more individuals prone to disease, decreased survival and reproduction (fitness), and decreased genetic diversity within the population.

  8. Inbreeding depression - Wikipedia

    en.wikipedia.org/wiki/Inbreeding_depression

    Darwin's wife, Emma, was his first cousin, and he was concerned about the impact of inbreeding on his ten children, three of whom died at age ten or younger; three others had childless long-term marriages. [16] [17] [18] Humans do not seek to completely minimize inbreeding, but rather to maintain an optimal amount of inbreeding vs. outbreeding.

  9. List of causes of death by rate - Wikipedia

    en.wikipedia.org/wiki/List_of_causes_of_death_by...

    For example, various Global Burden of Disease Studies investigate such factors and quantify recent developments – one such systematic analysis analyzed the (non)progress on cancer and its causes during the 2010–19-decade, indicating that 2019, ~44% of all cancer deaths – or ~4.5 M deaths or ~105 million lost disability-adjusted life years ...