A Third of Normal Weight People Are Actually Obese
The Paradox of Obesity With Normal Weight - A Cross-Sectional Study
Author: Tel-Aviv University - Contact: english.tau.ac.il
Peer-Reviewed: Yes - Publication Type: Nutrition and Metabolism
Journal Reference: DOI Link to the Study Paper
Related Papers: Latest Items - Full List
Synopsis: Researchers find that the widely used Body Mass Index (BMI) measurement is less sensitive to define obesity than we previously thought. The researchers analyzed the anthropometric data of 3,000 women and men, accumulated over several years: BMI scores; DXA scans (using X-rays to measure body composition, including fat content); and cardiometabolic blood markers. The study researchers recommended equipping clinics with devices for measuring body fat percentage and ultimately turning this index into the gold standard of obesity (to assess excess fat) in Israel and worldwide.
"The Paradox of Obesity With Normal Weight; a Cross-Sectional Study" - Frontiers in Nutrition.
Researchers from the School of Public Health at TAU's Faculty of Medicine examined the anthropometric data of about 3,000 Israeli women and men and concluded that body fat percentage is a much more reliable indicator of an individual's overall health and cardiometabolic risk than the BMI index, widely used in clinics today. The researchers suggest that body fat percentage should become the gold standard in this respect and recommend equipping clinics all over Israel with suitable devices.
The study - the largest of its kind ever conducted in Israel, was led by Prof. Yftach Gepner and PhD student Yair Lahav, in collaboration with Aviv Kfir. It and was based on data from the Yair Lahav Nutrition Center in Tel Aviv. The paper was published in Frontiers in Nutrition.
"Israel is a leader in childhood obesity and more than 60% of the country's adults are defined as overweight. The prevailing index in this respect is BMI, based on weight and height measures, which is considered a standard indicator of an individual's general health. However, despite the obvious intuitive connection between excess weight and obesity, the actual measure for obesity is the body's fat content, with the maximum normal values set at 25% for males and 35% for females. Higher fat content is defined as obesity and can cause a range of potentially life-threatening cardiometabolic diseases: heart disease, diabetes, fatty liver, kidney dysfunction, and more. The disparity between the two indexes has generated a phenomenon called 'the paradox of obesity with normal weight' - higher than normal body fat percentage in normal-weight individuals. In this study we examined the prevalence of this phenomenon in Israel's adult population."
The researchers analyzed the anthropometric data of 3,000 Israeli women and men, accumulated over several years: BMI scores; DXA scans (using X-rays to measure body composition, including fat content); and cardiometabolic blood markers. About one third of the participants, 1,000 individuals, were found to be within the normal weight range. Of these, 38.5% of the women and 26.5% of the men were identified as 'obese with normal weight' - having excess fat content despite their normal weight. Matching body fat percentage with blood markers for each of these individuals, the study found a significant correlation between 'obesity with normal weight' and high levels of sugar, fat, and cholesterol - major risk factors for a range of cardiometabolic diseases. At the same time, 30% of the men and 10% of the women identified as overweight were found to have a normal body fat percentage.
"Our findings were somewhat alarming, indicating that obesity with normal weight is much more common in Israel than we had assumed. Moreover, these individuals, being within the norm according to the prevailing BMI index, usually pass 'under the radar'. Unlike people who are identified as overweight, they receive no treatment or instructions for changing their nutrition or lifestyle - which places them at an even greater risk for cardiometabolic diseases."
Based on their findings, the researchers concluded that body fat percentage is a more reliable indicator of an individual's general health than BMI. Consequently, they suggest that body fat percentage should become the prevailing standard of health, and recommend some convenient and accessible tools for this purpose: skinfold measurements that estimate body fat based on the thickness of the fat layer under the skin; and a user-friendly device measuring the body's electrical conductivity, already used in many fitness centers.
"Our study found that obesity with normal weight is very common in Israel, much more than we had previously assumed, and that it is significantly correlated with substantial health risks. And yet, people who are 'obese with normal weight' are not identified by today's prevailing index, BMI. We also found that body fat percentage is a much more reliable indicator than BMI with regard to an individual's general health. Therefore, we recommend equipping all clinics with suitable devices for measuring body fat content, and gradually turning it into the gold standard both in Israel and worldwide, to prevent disease and early mortality."
Resources That Provide Relevant Related Information
- Are You Overweight, Obese or Normal Weight for Your Height
- Is BMI an Accurate Indicator of Body Fat?
- Under-diagnosis of Obesity when Using Body Mass Index (BMI)
- Average Height to Weight Chart: Babies to Teenagers
- Male and Female Waist to Hip Ratio Calculator
This peer reviewed nutrition and metabolism article relating to our Fitness and Nutrition section was selected for publishing by the editors of Disabled World due to its likely interest to our disability community readers. Though the content may have been edited for style, clarity, or length, the article "A Third of Normal Weight People Are Actually Obese" was originally written by Tel-Aviv University, and published by Disabled-World.com on 2023-07-14. Should you require further information or clarification, Tel-Aviv University can be contacted at english.tau.ac.il. Disabled World makes no warranties or representations in connection therewith.
Share This Information To:
𝕏.com Facebook Reddit
Discover Related Topics:
Disabled World is an independent disability community founded in 2004 to provide disability news and information to people with disabilities, seniors, their family and/or carers. See our homepage for informative reviews, exclusive stories and how-tos. You can connect with us on social media such as X.com and our Facebook page. Disabled World provides general information only. The materials presented are never meant to substitute for qualified professional medical care, nor should they be construed as such. Funding is derived from advertisements or referral programs. Any 3rd party offering or advertising does not constitute an endorsement.
Information, Citing and Disclaimer
Permalink: <a href="https://www.disabled-world.com/fitness/normal-weight.php">A Third of Normal Weight People Are Actually Obese</a>
Cite This Page (APA): Tel-Aviv University. (2023, July 14). A Third of Normal Weight People Are Actually Obese. Disabled World. Retrieved September 27, 2023 from www.disabled-world.com/fitness/normal-weight.php
Disabled World is an independent disability community founded in 2004 to provide disability news and information to people with disabilities, seniors, their family and/or carers. See our homepage for informative reviews, exclusive stories and how-tos. You can connect with us on social media such as X.com and our Facebook page.
Disabled World provides general information only. The materials presented are never meant to substitute for qualified professional medical care, nor should they be construed as such. Funding is derived from advertisements or referral programs. Any 3rd party offering or advertising does not constitute an endorsement.