Body fat percentage -
The accuracy of BMI in predicting health risk may vary across different individuals and racial and ethnic groups. Some populations have higher rates of obesity but that do not have corresponding rates of metabolic diseases like diabetes, and vice versa. BMI might be supplemented with other measures such as waist circumference or waist-hip ratio that better assess fat distribution.
When examining the relationship between BMI and mortality, failure to adjust for these variables can lead to reverse causation where a low body weight is the result of underlying illness, rather than the cause or confounding by smoking because smokers tend to weigh less than non-smokers and have much higher mortality rates.
Experts say these methodological flaws have led to paradoxical, misleading results that suggest a survival advantage to being overweight.
Some researchers consider waist circumference to be a better measure of unhealthy body fat than BMI as it addresses visceral abdominal fat, which is associated with metabolic problems, inflammation, and insulin resistance.
In people who do not have overweight, increasing waist size over time may be an even more telling warning sign of increased health risks than BMI alone. Wear thin clothing or no clothing. Stand up straight and wrap a flexible measuring tape around your midsection, laying the tape flat so it crosses your navel belly button.
The tape should be snug but not pinched too tightly around the waist. You can repeat the measurement times to ensure a consistent reading. According to an expert panel convened by the National Institutes of Health, a waist size larger than 40 inches for men and 35 inches for women increases the chances of developing heart disease, cancer, or other chronic diseases.
Like the waist circumference, the waist-to-hip ratio WHR is used to measure abdominal obesity. It is inexpensive and simple to use, and a good predictor of disease risk and early mortality.
Some believe that WHR may be a better indicator of risk than waist circumference alone, as waist size can vary based on body frame size, but a large study found that waist circumference and WHR were equally effective at predicting risk of death from heart disease, cancer, or any cause.
The World Health Organization has also found that cut-off points that define health risks may vary by ethnicity. For example, Asians appear to show higher metabolic risk when carrying higher body fat at a lower BMI; therefore the cut-off value for a healthy WHR in Asian women is 0.
Stand up straight and follow the directions for measuring waist circumference. Then wrap the tape measure around the widest part of the buttocks. Divide the waist size by the hip size. The WHO defines abdominal obesity in men as a WHR more than 0.
Waist-to-height ratio WHtR is a simple, inexpensive screening tool that measures visceral abdominal fat. It has been supported by research to predict cardiometabolic risk factors such as hypertension, and early death, even when BMI falls within a healthy range. To determine WHtR, divide waist circumference in inches by height in inches.
A measurement of 0. Equations are used to predict body fat percentage based on these measurements. It is inexpensive and convenient, but accuracy depends on the skill and training of the measurer. At least three measurements are needed from different body parts.
The calipers have a limited range and therefore may not accurately measure persons with obesity or those whose skinfold thickness exceeds the width of the caliper. BIA equipment sends a small, imperceptible, safe electric current through the body, measuring the resistance.
The current faces more resistance passing through body fat than it does passing through lean body mass and water. Equations are used to estimate body fat percentage and fat-free mass. Readings may also not be as accurate in individuals with a BMI of 35 or higher.
Individuals are weighed on dry land and then again while submerged in a water tank. This method is accurate but costly and typically only used in a research setting.
It can cause discomfort as individuals must completely submerge under water including the head, and then exhale completely before obtaining the reading.
This method uses a similar principle to underwater weighing but can be done in the air instead of in water. It is expensive but accurate, quick, and comfortable for those who prefer not to be submerged in water.
Individuals drink isotope-labeled water and give body fluid samples. Researchers analyze these samples for isotope levels, which are then used to calculate total body water, fat-free body mass, and in turn, body fat mass.
X-ray beams pass through different body tissues at different rates. DEXA uses two low-level X-ray beams to develop estimates of fat-free mass, fat mass, and bone mineral density. It cannot distinguish between subcutaneous and visceral fat, cannot be used in persons sensitive to radiation e.
These two imaging techniques are now considered to be the most accurate methods for measuring tissue, organ, and whole-body fat mass as well as lean muscle mass and bone mass. However, CT and MRI scans are typically used only in research settings because the equipment is extremely expensive and cannot be moved.
CT scans cannot be used with pregnant women or children, due to exposure to ionizing radiation, and certain MRI and CT scanners may not be able to accommodate individuals with a BMI of 35 or higher. Some studies suggest that the connection between body mass index and premature death follows a U-shaped curve.
The problem is that most of these studies included smokers and individuals with early, but undetected, chronic and fatal diseases. Cigarette smokers as a group weigh less than nonsmokers, in part because smoking deadens the appetite.
Potentially deadly chronic diseases such as cancer, emphysema, kidney failure, and heart failure can cause weight loss even before they cause symptoms and have been diagnosed.
Instead, low weight is often the result of illnesses or habits that may be fatal. Many epidemiologic studies confirm that increasing weight is associated with increasing disease risk. The American Cancer Society fielded two large long-term Cancer Prevention Studies that included more than one million adults who were followed for at least 12 years.
Both studies showed a clear pattern of increasing mortality with increasing weight. According to the current Dietary Guidelines for Americans a body mass index below But some people live long, healthy lives with a low body mass index.
But if you start losing weight without trying, discuss with your doctor the reasons why this could be happening. Learn more about maintaining a healthy weight.
The contents of this website are for educational purposes and are not intended to offer personal medical advice. You should seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.
Never disregard professional medical advice or delay in seeking it because of something you have read on this website. The Nutrition Source does not recommend or endorse any products. Skip to content The Nutrition Source. The Nutrition Source Menu. Search for:. Home Nutrition News What Should I Eat?
Role of Body Fat We may not appreciate body fat, especially when it accumulates in specific areas like our bellies or thighs. Types of Body Fat Fat tissue comes in white, brown, beige, and even pink. Types Brown fat — Infants carry the most brown fat, which keeps them warm. It is stimulated by cold temperatures to generate heat.
The amount of brown fat does not change with increased calorie intake, and those who have overweight or obesity tend to carry less brown fat than lean persons.
White fat — These large round cells are the most abundant type and are designed for fat storage, accumulating in the belly, thighs, and hips. They secrete more than 50 types of hormones, enzymes, and growth factors including leptin and adiponectin, which helps the liver and muscles respond better to insulin a blood sugar regulator.
But if there are excessive white cells, these hormones are disrupted and can cause the opposite effect of insulin resistance and chronic inflammation. Beige fat — This type of white fat can be converted to perform similar traits as brown fat, such as being able to generate heat with exposure to cold temperatures or during exercise.
Pink fat — This type of white fat is converted to pink during pregnancy and lactation, producing and secreting breast milk. Essential fat — This type may be made up of brown, white, or beige fat and is vital for the body to function normally. It is found in most organs, muscles, and the central nervous system including the brain.
It helps to regulate hormones like estrogen, insulin, cortisol, and leptin; control body temperature; and assist in the absorption of vitamins and minerals.
Very high amounts of subcutaneous fat can increase the risk of disease, though not as significantly as visceral fat. Having a lot of visceral fat is linked with a higher risk of cardiovascular disease, diabetes, and certain cancers.
It may secrete inflammatory chemicals called cytokines that promote insulin resistance. How do I get rid of belly fat? Losing weight can help, though people tend to lose weight pretty uniformly throughout the body rather than in one place.
my fat is 28 how can I reduce it suggest me i m also doing excercise in evening for 30 min. this post is great.. but their are so many peoples who are very very thin and they want to become fat.. kindly post some blog for those peoples also who want to become fat.
Developed by Medindia Content Team Calculator reviewed by The Medindia Medical Review Team Last Updated on Oct 05, English French Spanish Hindi. Facebook Twitter Pinterest Linkedin. i References. Post a Comment Comments should be on the topic and should not be abusive.
The editorial team reserves the right to review and moderate the comments posted on the site. Notify me when reply is posted I agree to the terms and conditions. Your comments are automatically posted once they are submitted. All comments are however constantly reviewed for spam and irrelevant material such as product or personal advertisements, email addresses, telephone numbers and website address.
Such insertions do not conform to our policy and 'Terms of Use' and are either deleted or edited and republished. Please keep your comments brief and relevant. This section may also have questions seeking help.
If you have the information you are welcome to respond, but please ensure that the information so provided is genuine and not misleading. i have 21kg bf how to reduce it while doing nothing pls help. shivani03, India. View all Comments 8. Recommended Readings on Body Fat.
Lean Body Mass Weight. Top Ten Fat Buster Tips. Fat is the culprit behind almost every lifestyle related disease or ailment. Losing excess fat is a way to ensure healthy and happy living. Quiz on Dietary Fat.
Benjamin Franklin had once said "I guess I don't so much mind being old, as I mind being fat and old. Test your knowledge about how much you know about fats or lipids by taking this Yoga - Obesity.
The problem of excess weight can be effectively dealt with, by the practice of yoga, which helps to shed unnecessary fat and keep the body in shape and in good health.
Yoga - obesity cause. Losing Fat Aesthetically: Inch Loss and Body Toning. Body therapies give the body a better shape and toned look and not just random fat loss. They are like passive exercise. The fat sitting deep within is mobilized and utilized from problem areas.
Belly fat, also called the abdominal fat and visceral fat, is not just about waist size. It is about your health. Take this quiz to find out how much you know about your belly fat. Body Mass Index. The BMI calculator helps you assess your weight indicating if it is normal or if you are underweight or overweight, based on your height.
Resting Metabolic Rate RMR. We burn calories even when we rest. Daily Calorie Counter for Indian Food. Do you wish to know your daily calorie intake? Counting calories is an effective way to prevent obesity.
This is the right place for you to calculate the calories in the daily Indian meal. Daily Calorie Requirements. Are you health conscious? If yes, go ahead to find out your approximate daily calorie requirement, which varies depending on the lifestyle and activities. This calculator indicates an approximate calorie requirement for a person having a normal How to Lose Weight?
Slide show which explains obesity causes and tips on how to lose weight. Exercising before breakfast is most effective for weight loss. Weight Loss Program For Men. Maintaining a food diary and keeping a track of what you eat is the best way to keep your weight under check.
Weight Loss Quick Fixes. Quick fix weight loss solutions are tempting when one is desperate to shed off the extra kilos, be it for a big occasion or post a holiday. Diet and Nutrition for Healthy Weight Loss. Correct diet and a planned exercise regime is the mantra of healthy and sustainable weight loss.
Weight Loss Surgery - Sleeve Gastrectomy - Animation. Health Screening Guidelines. Use these Health Screening Guidelines that list the medical conditions you should be screened for in your next health check-up.
Anorexia or Bulimia Screening Test.
Jill is Fluid replacement for young athletes registered dietitian who's fqt writing about nutrition, health, and fitness for more fay 20 Essential oils for skin. Rachel Goldman, Ph. Do you have a love-hate relationship percntage your percentahe scale? Body fat percentage bathroom dat may be a good tool for measuring weight, but it may not accurately reflect your true health. Body composition takes your weight measurement one step further, figuring out what percentage of your weight comes from fat, muscle, and bone. The difference between fat mass and non-fat mass muscle and bone paints a more complete picture of your health and fitness. This article reviews the basics of your body composition, what it means, and what you can do about it. The Heightened fat-burning mechanisms Fat Calculator can be used to estimate your percentaye body ffat Body fat percentage on specific measurements. Use percfntage "Metric Units" tab if you percetnage more comfortable with the International System of Units SI. This calculation is based on the U. Navy methodbut also includes the calculation of body fat percentage using the BMI method both of which are outlined below. Related BMI Calculator Calorie Calculator Ideal Weight Calculator. The scientific term for body fat is "adipose tissue. Its primary purpose is to store lipids from which the body creates energy.
Geben Sie wir werden zum Thema zurückkehren