On January 16, 2017, MetLife agreed to a five-year sponsorship to rename Seibu Dome in Tokorozawa, Saitama Prefecture in Japan as the MetLife Dome. From 2014 to 2017, MetLife was the title sponsor of the BWF Super Series badminton tournament. Weight and longevity data In 1959, The Metropolitan Life Insurance Company (as it was known at the time) released tables of the best weight for each height for longevity, based on their collected insurance data. These tables showed what were characterized as “desirable weights”. In 1983, the company released tables showing the “ideal” weights for greatest longevity; this information was based on data collected in the Build Study of 1979 collected by the Society of Actuaries. This data followed patients for 18 years (1954–1972) and was collected from 25 life insurance companies in Canada and the United States, representing 4.2 million people. These “ideal” weights were higher than the prior “desirable” weights, this was attributed to an increase in muscle mass due to improved fitness levels among the population. This study is still the largest available pool of data for this purpose. It was noticed that the average weights in the population are higher than the ideal weights for survival. The ‘’’Metropolitan Tables’’’ included ‘’small’’, ‘’medium’’ and ‘’large’’ frames, based on elbow-girth measured using calipers, as the elbows do not develop adipose tissue. They presented weight ranges for height, sex and body frame (again associated with the lowest mortality) The midpoint of the ideal weight for the medium frames for each height was selected as the “ideal” weight used for calculations of “excess weight” (initial weight minus ideal weight). This led to a formula to calculate the ideal weight used by bariatric surgeons, but it had lost considerable accuracy by 2007, again due to improvements in medical care and in public health. See also List of United States insurance companies Park La Brea, Los Angeles, California Park Merced, San Francisco, California Parkchester, Bronx Riverton Houses Stuyvesant Town References Archives and records New England Mutual Life Insurance Company records at Baker Library Special Collections, Harvard Business School. Life insurance companies of the United States Financial services companies based in New York City Insurance companies based in New York City Multinational companies based in New York City Former mutual insurance companies American companies established in 1868 Financial services companies established in 1868 1868 establishments in New York (state) 2000 initial public offerings