|
Obese people, and particularly those who are
extremely obese, tend to die earlier than those of
normal weight, but people who are overweight (but
not obese) may live longer than people with
clinically normal body weight.
Relative Risks of Mortality by BMI Category, Survey,
and Age: BMI indicates body mass index, measured as
weight in kilograms divided by the square of height
in meters. The reference category with relative risk
1.0 is BMI 18 to <25. Error bars indicate 95%
confidence intervals.
The surprising conclusion comes from an enormous,
detailed review of over 100 previously published
research papers connecting body weight and mortality
risk among 2.88 million study participants living
around the world.
Overall, men and women who were overweight but not
obese were 6% less likely to die during the average
study period than normal-weight people.
That advantage did not appear to vary by age,
smoking status, or region of the world.
The study looked only at how long people lived,
however, and not how healthy they were whey the
died, or how they rated their quality of life.
Examinig associations of BMI and body fat percentage
(separately and together) with mortality another
research found that low BMI and high body fat
percentage are independently associated with
increased mortality.
In fully adjusted mortality models containing both
BMI and body fat percentage, low BMI and high body
fat percentage were associated with higher mortality
in women and in men.
For more information
Jama
Excess Deaths Associated With Underweight,
Overweight, and Obesity
Link...
Annals of Internal Medicine
Relationship Among Body Fat Percentage, Body Mass
Index, and All-Cause Mortality: A Cohort Study
Link...
MDN |