The Kardashians season finale that aired last night featured some New Zealand research. 

Kim Kardashian, as well as her sister, mother and brother-in-law, all took a test that determined their real biological age, with Kardashian coming in 10 years younger than what she thought she was. 

The science behind the test is an algorithm developed by scientists of the Dunedin Study. 

The Dunedin Study director Dr Moana Theodore joined Heather du Plessis-Allan. 

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