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What is body mass index (BMI)?
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What is a BMI Calculator?
Apr 17, 2024 · Calculating your body mass index (BMI) involves using a simple formula with your weight (in pounds or kilograms) and height (in inches or meters). BMI is used to estimate your body fat and establish whether you are underweight, at your healthy weight, overweight, or have obesity.
- What Is Body Mass Index?
- Body Mass Index Formula
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- Body Mass Index and Health
Body mass index (BMI) is an estimate of body fat based on height and weight. It doesn’t measure body fat directly, but instead uses an equation to make an approximation. BMI can help determine whether a person is at an unhealthy or healthy weight.
A high BMI can be a sign of too much fat on the body, while a low BMI can be a sign of too little fat on the body. The higher a person’s BMI, the greater their chances of developing certain serious conditions, such as heart disease, high blood pressure, and diabetes. A very low BMI can also cause health problems, including bone loss, decreased immune function, and anemia.
BMI is calculated by dividing a person’s weight by the square of their height.
The Centers for Disease Control and Prevention (CDC) provides a simple online child and teen BMI calculator for ages 2 to 19, and an adult BMI calculator for ages 20 and older.
To calculate the BMI, you enter the height in feet and weight in pounds. The calculators also provide weight status charts to help you interpret the results.
BMI is calculated the same way for people of all ages. However, BMI is interpreted differently for adults and children.
Adults age 20 and older can interpret their BMI based on the following standard weight status categories. These are the same for men and women of all ages and body types:
BMI is interpreted differently for people under age 20. While the same formula is used to determine BMI for all age groups, the implications for children and adolescents can vary depending on age and gender. The amount of body fat changes with age. It’s also different in young boys and girls. Girls usually acquire a higher amount of body fat and develop it earlier than boys.
For children and teens, the CDC uses age growth charts to show BMI as a percentile ranking. Each percentile expresses a child’s BMI relative to other children of the same age and gender. For example, a child would be considered obese if they had a BMI that landed at or above the 95th percentile. This means that they have more body fat than 95 percent of children in the same age and gender category.
According to the National Institutes of Health, more than two in three adults are considered overweight and one in three are considered obese. About 17 percent of children and teenagers (ages 2 to 19) are considered obese.
People gain weight as a result of an energy imbalance. The body needs a certain amount of energy from food in order to function. This energy is obtained in the form of calories. Your weight will usually stay the generally the same when you consume the same number of calories as your body uses or “burns” each day. If you take in more calories than you burn, you will gain weight over time.
Energy imbalance is certainly one of the biggest contributors to weight gain. However, your ideal weight is primarily determined by genetics, as well as by the types of foods you eat and how much you exercise. If you have a high BMI, it’s important to lower it so you’re at a healthy weight status. A high BMI is related to a greater risk of developing serious health conditions, such as:
•heart disease
•high blood pressure
•liver disease
Mar 14, 2024 · Adult BMI Calculator. Child and Teen BMI Calculator. Body Mass Index (BMI) is a person’s weight in kilograms divided by the square of height in meters. A high BMI can indicate high body fatness. BMI screens for weight categories that may lead to health problems, but it does not diagnose the body fatness or health of an individual.
The BMI is defined as the body mass divided by the square of the body height, and is expressed in units of kg/m 2, resulting from mass in kilograms (kg) and height in metres (m). The BMI may be determined first by measuring its components by means of a weighing scale and a stadiometer.
May 9, 2022 · Body mass index (BMI) is a medical screening tool that measures the ratio of your height to your weight to estimate the amount of body fat you have. Healthcare providers calculate BMI by using weight in kilograms (kg) divided by the square of height in meters (m2).
Oct 17, 2022 · Formula: weight (lb) / [height (in)] 2 x 703. Example: weight = 150 lbs, height = 5’5” (65") BMI calculation: [150 / (65) 2] x 703 = 24.96. Metric.
Sep 2, 2022 · 1. Height: Feet. Inches. 2. Weight: Pounds. Note: this calculator uses JavaScript. If you have JavaScript turned off or have problems using the calculator, use the formula for calculating BMI on About BMI for Adults. Share the Adult BMI Calculator Widget.
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related to: what is the formula for calculating body mass index definitionObesity Is A Chronic Disease With Many Associated Health Risks, Learn More. View Information & Data for Physicians on Obesity and Associated Comorbidities.
