Whakarāpopototia te tuhinga:  I roto i tētahi āhuatanga iranga tuatahi, kua whakarārangitia e ngā pūtaiao te huinga nui rawa atu o ngā huinga iranga tangata mai i tētahi iwi kotahi. Ko te mahi nui ko te whakariterite i te DNA o te 2,636 Icelanders me te whakataurite ki nga waahanga o etahi atu 104,000. I roto i ētahi kitenga matua, e tohu ana te huinga raraunga ko te 'papa o te tangata' - ko tātau tupuna tāne tata rawa atu - i ora i waenganui i te 174,000 me te 321,000 tau ki muri. Panuku ki raro mō te ataata. I roto i tētahi āhuatanga iranga tuatahi, kua whakarārangitia e ngā pūtaiao te huinga nui rawa atu o ngā huinga iranga tangata mai i tētahi iwi kotahi. Ko te mahi nui ko te whakariterite i te DNA o ngā tāngata o Īsland 2,636 me te whakataurite i a rātou ki ngā whakariterite ā-wāhanga o ētahi atu 104,000 e whakaatu ana i ngā tirohanga ki te kunenga o te tangata. E whakaaro ana ngā kaipūtaiao ko Ī Island he kohuke koura hei rangahau i te ira. I whakatūria te whenua e tētahi rōpū iti o ngā kainoho mai i Uropi i tae mai i te 1,100 tau ki muri, ā, i noho wehe tonu mō ngā tau kotahi mano i muri mai. I te mea he iti rawa te rerekētanga iranga o te iwi i Iceland, ka taea e ngā pūtaiao te kimi i ngā rerekētanga iranga e whakanui ake ana i te tūponotanga o te mate. He nui hoki ngā pūkete whakapapa o Īheni, nā ngā tuhinga hītori i tiakina pai. Ko tēnei rā, i runga i te tātaitanga o ngā auau o te hurihanga o te tangata, e taupatupatu ana ki ngā kitenga o mua e kī ana i noho te matua o te tangata katoa tata ki te 340,000 tau ki mua. I tēnei wā, e whakaaro ana ngā kaipūtaiao he 239,000 tau tōna pakeke <unk> he rā e tata ana ki te tupuna wahine tino noa o te tangata e whakapono ana i ora i te 200,000 tau ki muri. I tua atu i ngā tirohanga whanaketanga, e kī ana ngā kaipūtaiao ka āwhina te huinga raraunga ki a rātau ki te kimi i ngā 'ira hurihuri' e tiaki tūturu ana i tētahi rōpū onge o te iwi i ētahi mate. I tēnei wā, kua whakaratohia e te mahi he hua whakaari e āwhina ana ki te tautuhi i te 20 miriona rerekē iranga i roto i te iwi o Iceland. I roto i ēnei rerekētanga, kua kitea kētia e ngā pūtaiao o DeCode Genetics i Reykjavik ngā ira e whakanui ana i ngā mōrea o te mate o Alzheimer, ngā raruraru ate me te thyroid. 'Ko tēnei mahi he whakaaturanga o te raupapa mana ahurei e homai ana ki a tātou,'...
I whakarārangitia e ngā kaipūtaiao te huinga nui rawa o ngā huinga ira tangata mai i tētahi iwi kotahi. E whakaatu ana ngā raraunga i ētahi nekeneke iranga ohorere i roto i te iwi o Īsland. I whakaaturia hoki e Rara ko te matua o te tangata he pakeke ake i te whakaaro tuatahi. E waru ōrau o te taupori he ira kāore i te mahi rawa. I kitea e te rangahau ngā ira e whakapiki ana i te mōrea o te mate Alzheimer me te mate ate. E kī ana ngā kaipūtaiao ka āwhina te raraunga ki a rātou ki te whakawhanake i ngā rongoā pai ake mō te mate.