Body mass index and disease-specific mortality in an 80-year-old population at the 12-year follow-up

Yutaka Takata, Toshihiro Ansai, Inho Soh, Shuji Awano, Ikuo Nakamichi, Sumio Akifusa, Kenichi Goto, Akihiro Yoshida, Hiroki Fujii, Ritsuko Fujisawa, Kazuo Sonoki

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Abstract

Although many investigations examined the relationship between body mass index (BMI) and mortality, little is known about the possible associations between BMI and disease-specific mortality in very elderly people. Here we evaluated this association in an 80-year-old population. In 1998, 675 residents in Japan's Fukuoka Prefecture participated. They were followed up for 12 years after the baseline examination; 37 subjects (5.5%) were lost to follow-up. The subjects were divided into six groups by their BMI values: <19.5 (most-thin), 19.5 to <21.1 (relatively thin), 21.1 to <22.5 (thin/normal), 22.5 to <23.8 (normal/overweight), 23.8 to <26.0 (relatively obese), ≥26.0 (most-obese). The most-thin group had the highest mortality from all-causes, and from respiratory disease. The normal/overweight group had the lowest overall mortality among the six BMI groups. These associations were found in the men, but not in the women. The most-obese group did not have higher mortality from all-causes or cardiovascular disease compared to the normal/overweight group. Respiratory disease-related mortality was lowest in the most-obese group. No association was found between BMI group and mortality from cancer. In conclusion, in an 80-year-old Japanese population, mortality from all-causes or respiratory disease was highest in the most-lean group (BMI <19.5), and mortality from all-causes or cardiovascular disease was lowest in the group with BMI 22.5 to <23.8.

Original languageEnglish
Pages (from-to)46-53
Number of pages8
JournalArchives of Gerontology and Geriatrics
Volume57
Issue number1
DOIs
Publication statusPublished - Jul 1 2013

All Science Journal Classification (ASJC) codes

  • Health(social science)
  • Ageing
  • Gerontology
  • Geriatrics and Gerontology

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    Takata, Y., Ansai, T., Soh, I., Awano, S., Nakamichi, I., Akifusa, S., Goto, K., Yoshida, A., Fujii, H., Fujisawa, R., & Sonoki, K. (2013). Body mass index and disease-specific mortality in an 80-year-old population at the 12-year follow-up. Archives of Gerontology and Geriatrics, 57(1), 46-53. https://doi.org/10.1016/j.archger.2013.02.006