title: Association between body mass index and mortality in an 80-year-old population.
abstract: OBJECTIVE
  To evaluate the association between body mass index (BMI) and all-cause mortality and cardiovascular disease (CVD) in an 80-year-old population.
  
  
  METHODS
  Cohort study.
  
  
  METHODS
  Community-based.
  
  
  METHODS
  Six hundred ninety-seven of 1,282 (54.4%) 80-year-old candidate individuals.
  
  
  METHODS
  The dates and causes of all deaths were followed up for 4 years.
  
  
  RESULTS
  The relative hazard ratios (HRs) for all-cause mortality were lower in overweight subjects (BMI > or= 25.0) than in underweight (BMI<18.5) or normal-weight (BMI 18.5-24.9) subjects. Similarly, the HRs for mortality due to CVD in overweight subjects were 78% less (HR=0.22, 95% confidence interval (CI)=0.06-0.77) than those in underweight subjects, and those in normal weight subjects were 78% less (HR=0.22, 95% CI=0.08-0.60) than those in underweight subjects. Mortality due to CVD was 4.6 times (HR 4.64, 95% CI=1.68-12.80) as high in underweight subjects as in normal-weight subjects, and mortality due to cancers was 88% lower (HR=0.12, 95% CI=0.02-0.78) in the overweight group than in the underweight group. There were no differences in mortality due to pneumonia.
  
  
  CONCLUSIONS
  Overweight status was associated with longevity and underweight with short life, due to lower and higher mortality, respectively, from CVD and cancer.
authors.affiliation: Division of General Internal Medicine, Department of Health Promotion, Kyushu Dental College, Kitakyushu, Japan. yutaka@kyu-dent.ac.jp
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Takata
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Ansai
authors.forename: Inho
authors.initials: I
authors.lastname: Soh
authors.forename: Sumio
authors.initials: S
authors.lastname: Akifusa
authors.forename: Kazuo
authors.initials: K
authors.lastname: Sonoki
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Fujisawa
authors.forename: Shuji
authors.initials: S
authors.lastname: Awano
authors.forename: Shuntaro
authors.initials: S
authors.lastname: Kagiyama
authors.forename: Tomoko
authors.initials: T
authors.lastname: Hamasaki
authors.forename: Ikuo
authors.initials: I
authors.lastname: Nakamichi
authors.forename: Akihiro
authors.initials: A
authors.lastname: Yoshida
authors.forename: Tadamichi
authors.initials: T
authors.lastname: Takehara
mesh_terms: D000369:Aged, 80 and over; D044466:Asian People / Q000706:statistics & numerical data*; D015992:Body Mass Index; D001835:Body Weight; D002318:Cardiovascular Diseases / Q000208:ethnology* / Q000401:mortality*; D015331:Cohort Studies; D005260:Female; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008136:Longevity; D008297:Male; D009369:Neoplasms / Q000208:ethnology / Q000401:mortality; D011014:Pneumonia / Q000208:ethnology / Q000401:mortality