Nikolay Zak

Nikolay Zak is a Russian mathematician and economist who is currently researching gerontology at the Moscow Society of Naturalists. He is best known for his research and publication of articles skeptical of the claim that Jeanne Calment of France was the oldest person in the world when she died in 1997 at age 122. Zak received his Ph.D. in Mathematics from Moscow State University in 2007 and his Master’s in Economics in 2006 from the New Economic School in Moscow.[1]

Career

In 2018 Zak worked with Russian gerontologist Valery Novoselov to publish a theory that Calment died in 1934, and her daughter Yvonne, born in 1898, assumed her mother's official identity and was therefore 99 years old when she died in 1997.[2]

A Russian scientific journal rejected Zak's paper as being too informal, as did the bioRxiv preprint repository, and Zak published it instead on ResearchGate, a social networking site for scientists and researchers.

The theory attracted widespread media attention around 30 December 2018 after postings by gerontology blogger Yuri Deigin went viral.[3][4][5][6] In January 2019, Zak's paper was accepted for publication in the journal Rejuvenation Research.[7] In 2020 he published "A Bayesian Assessment of the Longevity of Jeanne Calment."[8]

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gollark: Bogobogobogobogosort is better.
gollark: Yes, it is turing-complete.
gollark: I can serve as backup esobot during this time, though my working hours are between 22:00 and 7:00 and only on good days.
gollark: =help help

References
  1. "Lifeboat Foundation Bios: Dr. Nikolay Zak". lifeboat.com. Retrieved 2020-05-26.
  2. Zak, Nikolay (December 2018). "Jeanne Calment: the secret of longevity". ResearchGate. doi:10.13140/RG.2.2.29345.04964. Retrieved 27 December 2018. Cite journal requires |journal= (help)
  3. Deigin, Yuri (10 December 2018). "J'Accuse…! Why Jeanne Calment's 122-year old longevity record may be fake". Retrieved 12 December 2018 – via Medium.
  4. "Cette surprenante théorie sur l'âge de Jeanne Calment affole les réseaux sociaux" [This surprising theory about Jeanne Calment's age sets social networks on fire]. HuffPost (in French). 30 December 2018. Retrieved 23 January 2019.
  5. "La théorie qui déboulonne… Jeanne Calment" [The theory that debunks… Jeanne Calment]. Le Point (in French). 30 December 2018. Retrieved 23 January 2019.
  6. Rubetti, Morgane (1 January 2019). "Des Russes remettent en cause l'âge de Jeanne Calment, doyenne de l'humanité" [Russians question the age of Jeanne Calment, world's oldest person]. Le Figaro (in French). AFP. Retrieved 23 January 2019.
  7. Zak, Nikolay (30 January 2019). "Evidence that Jeanne Calment died in 1934, not 1997". Rejuvenation Research. 22: 3–12. doi:10.1089/rej.2018.2167. PMC 6424156. PMID 30696353.
  8. "A Bayesian Assessment of the Longevity of Jeanne Calment," Rejuvenation Research, Vol. 23, No. 1 https://www.liebertpub.com/doi/full/10.1089/rej.2019.2227
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