Masao Kadoguchi, the oldest living person in Nagasaki Prefecture, dies at 110
The Gerontology Research Group (GRG) is sadden to reported that Mr. Masao Kadoguchi (門口正雄), the oldest living person in Nagasaki Prefecture, Japan, sadly passed away in Nagasaki City on 27 January 2026 at the final age of 110 years and 142 days. Masao Kadoguchi was born in Kagawa Prefecture, Japan, on 7 September 1915 (Taishō 4). On 23 April 2025, following the death of an anonymous 109-year-old woman in Nagasaki City, Kadoguchi became the oldest living person in Nagasaki Prefecture. On 7 September 2025, Kadoguchi celebrated his 110th birthday and became a supercentenarian. Kadoguchi’s age was verified by Ministry of Health, Labour, and Welfare, Japan and Brian Hsu, and validated by the GRG on 9 October 2025. Masao Kadoguchi passed away in…
Jadwiga Żak-Stewart of Poland (1912?-2026)
It is with sadness that we report the passing of Mrs. Jadwiga Żak-Stewart of Łódź, Łódź Voivodeship, Poland, at the claimed age of 113. Following her passing, Anna Winiarska of Huta Gogołowska, Subcarpathia Voivodeship, born Feb. 23, 1915, aged 110, becomes the unchallenged Doyenne of Poland. Jadwiga Żak-Stewart claims to have been born in Poland on 15 July 1912. In the 1980s, she decided to move to the USA. At the age of 100, she decided to return to Poland. She was fully independent until late senility, and maintained very strong character, and sense of humor. At age 104, Jadwiga Żak-Stewart decided to move to a senior home, where she…
Haruko Tanaka, the oldest living person in Tottori Prefecture, dies at 111
The Gerontology Research Group (GRG) is sadden to report the death of Mrs. Haruko Tanaka (田中春子), the oldest living person in Tottori Prefecture, Japan, who lived in Hiketa, Kawahara (河原町曳田), Tottori City, passed away on 15 January 2026 at the age of 111 years and 314 days. Haruko Tanaka was born in Kawahara (now part of Tottori City), Tottori Prefecture, Japan, on 7 March 1914 (Taishō 3), as the youngest of three siblings. At the age of 21, she married and raised four children. Tanaka had contracted COVID-19 before her 110th birthday in March 2024 but recovered, and her birthday party was held on May 2nd, about two months later. At the age of 110, it was…
Extreme old age does not necessarily mean being plagued by diseases, science deciphers the bodily mechanisms of a 117-year-old’s “defying aging”
Spanish scientists have conducted an unprecedentedly in-depth biological analysis of Maria Branyas Morera, former the WORLD’S OLDEST LIVING PERSON that verified by Guinness World Records, revealing the key secrets to her extreme longevity and disease-free life. Born in San Francisco, California, USA on 4 March 1907 and later moving to Catalonia, Spain, she passed away on 19 August 2024 at the age of 117 years and 168 days, having never suffered from cancer, cardiovascular disease, or dementia. “The general rule is that people become weaker and more prone to illness with age, but she is an exception,” said Dr. Manel Esteller of the Josep Carreras Leukaemia Research Institute in Spain.…
Oiku Hashimoto, the oldest living person in Gunma Prefecture, dies at 111
The Gerontology Research Group (GRG) is sadden to report the death of Mrs. Oiku Hashimoto (橋本オイク), the oldest living person in Gunma Prefecture, Japan, who lived in Ōra Town (邑楽町), passed away on 11 January 2026 due to old age. She was 111 years and 200 days at that time. Oiku Hashimoto was born in Shinozuka (篠塚), Ōra Town, Gunma Prefecture, Japan, on 25 June 1914 (Taishō 3). She had five children. According to her second son, Akira (晃, then 86), she was devoted to farming and enjoyed playing gateball and ground golf until she was 104. “She was strong-willed and patient, just like a mother born in the Taisho…