e/Extreme longevity tracking

Information
has gloss	eng: Extreme longevity tracking is the tracing and recording of claims of exceptionally long human lives (longevity), as a branch of demography. Persons have been noted for tracking supercentenarians (those aged 110+) for hundreds of years; some included quite famous persons noted in other fields. What was once a hobby in the Middle Ages became a more scientific endeavor in the 1870s with William Thoms. Alexander Graham Bell dabbled in the field, among his many other pursuits. While long a back-burner field, noted names such as "Young and Bowerman" in the 1930s continued. The advent of the Guinness Book of World Records brought the tradition worldwide recognition. By the 1960s, some governments began tracking centenarians as well as the oldest person in the country (for example, Japan started in 1963; the UK in 1966). Today, many European nations, from Germany to the Netherlands, track supercentenarians. However, even some Western nations have lagged: major efforts in the USA only started in the last decade, and other federalized states such as France have not yet instituted such recordkeeping. Due to this, there remains room for unofficial experts.
lexicalization	eng: Extreme longevity tracking
instance of	(noun) the best record in the whole world world record