Navigation Links
BMI criteria for obesity surgery should be lowered, UT Southwestern researcher suggests
Date:12/17/2007

DALLAS Dec. 18, 2007 UT Southwestern Medical Center researchers have found that the existing body mass index criteria for obesity surgery often excludes a group of obese patients at risk of cardiovascular disease.

The study, appearing in the December issue of the journal Surgery for Obesity and Related Diseases, is among the first to evaluate the risk-factor relationship between body mass index (BMI) and cardiovascular disease as it relates to bariatric surgery criteria, said Dr. Edward Livingston, chairman of GI/endocrine surgery at UT Southwestern and lead author of the study.

Our results show that cardiovascular risk factors do not necessarily worsen with increasing obesity, Dr. Livingston said. They also support the concept that obesity, by itself, doesnt trigger an adverse cardiovascular risk profile or increased risk of death.

The researchers examined patient data from the Third National Health and Nutrition Examination Survey database for the presence of known cardiovascular risk factors as a function of obesity. The survey was a cross-sectional study conducted from 1988 to 1994. All 17,234 participants had a BMI greater than 20.

BMI is a weight-to-height ratio commonly used in doctors offices to gauge obesity. A normal BMI is between 18.5 and 25, whereas someone with a BMI of 40 or more is at least 100 pounds over their recommended weight and is considered morbidly obese.

Bariatric weight-loss surgery is currently recommended for patients with a BMI greater than 40, as well as for patients with a BMI greater than 35 who also suffer from a life-threatening illness, such as non-insulin dependent diabetes, sleep apnea or heart disease.

The study findings show that some morbidly obese patients have better cardiovascular disease risk profiles than those who are less obese. In particular, the researchers found that cardiovascular risk factors can be much worse in many individuals with a BMI as low as 30 than they are for some surgical candidates with higher BMIs.

This suggests that some patients who are obese but not morbidly obese could benefit from bariatric surgery, which can help reduce cardiovascular disease, said Dr. Livingston.

Dr. Nicola Abate, associate professor of internal medicine in the Center for Human Nutrition at UT Southwestern and the studys co-author, said its possible that very obese patients simply have a greater capacity to store excessive calories in their adipocytes, or fat cells, thereby preventing excessive fat from spilling into the bloodstream, where it contributes to heart disease.

Our findings suggest that there is a group of individuals who have an almost unlimited ability to store excess calories as fat. This prevents changes in plasma metabolites, such as triglycerides and cholesterol, which promote risk for heart disease, Dr. Abate said. In contrast, those who cant store as much fat and who only accumulate fat in the upper body often have excessive plasma concentrations of triglycerides and cholesterol, which will increase their risk for heart disease. Even though their BMI may be below the current recommended cutoff, these patients could potentially benefit from bariatric surgery.


'/>"/>

Contact: Kristen Holland Shear
kristen.hollandshear@utsouthwestern.edu
214-648-3404
UT Southwestern Medical Center
Source:Eurekalert

Related biology news :

1. Childhood obesity indicates greater risk of school absenteeism, Penn study reveals
2. Obesity and lack of exercise could enhance the risk of pancreatic cancer
3. Obesity and the central nervous system -- the state of the art
4. Obesity-related hormone is higher in children with Down syndrome
5. Australian researchers develop treatment to treat obesity
6. Study suggests link between obesity, poor bone health
7. Minimally invasive heart surgery research wins NIH award
8. Pennsylvania Hospital surgeon receives grant to develop molecular cardiac surgery
9. UT Southwestern researchers identify hundreds of genes controlling female fertility
10. Researchers identify proteins involved in new neurodegenerative syndrome
11. Texas researchers and educators head for Antarctica
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/6/2017)... 2017 Forecasts by Product Type ... by End-Use (Transportation & Logistics, Government & Public Sector, ... Fossil Generation Facility, Nuclear Power), Industrial, Retail, Business Organisation ... Are you looking for a definitive report on the ... ...
(Date:4/3/2017)... 3, 2017  Data captured by IsoCode, ... detected a statistically significant association between the ... treatment and objective response of cancer patients ... predict whether cancer patients will respond to ... well as to improve both pre-infusion potency testing ...
(Date:3/28/2017)... March 28, 2017 The report ... (Camera, Monitors, Servers, Storage Devices), Software (Video Analytics, VMS), ... - Global Forecast to 2022", published by MarketsandMarkets, the ... and is projected to reach USD 75.64 Billion by ... 2022. The base year considered for the study is ...
Breaking Biology News(10 mins):
(Date:8/16/2017)... ... August 16, 2017 , ... ... and Electrospraying line of nanofiber and nanoparticle fabrication instruments ... the lab to fully automated pilot plants and equipment for industrial manufacturing. ...
(Date:8/16/2017)... edition of the Inc. 5000 features a now-familiar name: BioPoint ( http://biopointinc.com/ ... list for the third year in a row. Now in its 36th ... a set of quantitative metrics. In addition, BioPoint was also named to ... Bay State . ... ...
(Date:8/15/2017)... ... 2017 , ... Pittcon is pleased to once again co-program ... This year’s symposium, organized by the Pittcon 2018 program chair, Annette Wilson, (University ... dynamic presentation will discuss novel ionization processes, high throughput IMS-MS technologies, and top ...
(Date:8/15/2017)... ... August 15, 2017 , ... JULABO USA introduces its ... new website makes it easy to navigate through the site whether you’re in ... detailed product information, educational industry content and visit the company’s social media accounts, ...
Breaking Biology Technology: