February 7, 2013
The January 2013 issue of the Journal of the American Medical Association published findings from an analysis of data from 97 research studies to determine risk of death based on body mass index (BMI). Surprisingly, the results show that people who are overweight (BMI 25-<30 kg/m2) and mildly obese (Grade 1 obesity, BMI 30-<35 kg/m2) had a lower risk of death compared to people with normal BMI (18.5-<25 kg/m2). This finding exists in people with heart attacks, strokes and heart failure.
The obesity paradox is not new to the kidney care community. In 2003 Dr. Kamyar Kalantar-Zadeh proposed the term reverse epidemiology to describe a protective survival benefit observed in hemodialysis and heart failure patients who were overweight and mildly obese. Higher cholesterol levels were also associated with reverse epidemiology.
So does this mean your weight does not matter when you have kidney or heart disease? Here’s some food for thought before you abandon your current eating plan. Read more…