For Older Adults Waist-Hip Ratio Better Indicator of Obesity Than BMI Readings

by Rajashri on  September 06, 2009 at 7:44 AM Obesity News
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 For Older Adults Waist-Hip Ratio Better Indicator of Obesity Than BMI Readings
Waist-hip ratio is a better indicator of obesity than Body mass index (BMI) readings for older adults, according to new research by UCLA endocrinologists and geriatricians.

The researchers from the David Geffen School of Medicine at UCLA said that the ratio of waist size to hip size may be a better indicator when it comes to people over 70 years of age.

They found that the waist-to-hip circumference ratio was a better yardstick for assessing obesity in high-functioning adults between the ages of 70 and 80, presumably because the physical changes that are part of the aging process alter the body proportions on which BMI is based.

"Basically, it isn't BMI that matters in older adults - it's waist size. Other studies have suggested that both waist size and BMI matter in young and middle-aged adults and that BMI may not be useful in older adults; this is one of the first studies to show that relative waist size does matter in older adults, even if BMI does not matter," said Dr. Preethi Srikanthan, UCLA assistant professor of endocrinology and the study's lead investigator.

The researchers used data from the MacArthur Successful Aging Study - a longitudinal study of high-functioning men and women between the ages of 70 and 79.

They examined all-cause mortality risk over 12 years by BMI, waist circumference and waist-hip ratio.

They adjusted for gender, race, baseline age and smoking status. The average age of participants was 74.

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