Body mass rate

Official websites use. Share sensitive information only on official, secure websites. Body mass rate is an estimate of body fat and a good measure of your patients' risk for diseases that can occur with overweight and obesity, body mass rate. For adults, a healthy weight is defined as the appropriate body weight in relation to height.

Note that the calculator also computes the Ponderal Index in addition to BMI, both of which are discussed below in detail. BMI is a measurement of a person's leanness or corpulence based on their height and weight, and is intended to quantify tissue mass. It is widely used as a general indicator of whether a person has a healthy body weight for their height. Specifically, the value obtained from the calculation of BMI is used to categorize whether a person is underweight, normal weight, overweight, or obese depending on what range the value falls between. These ranges of BMI vary based on factors such as region and age, and are sometimes further divided into subcategories such as severely underweight or very severely obese. Being overweight or underweight can have significant health effects, so while BMI is an imperfect measure of healthy body weight, it is a useful indicator of whether any additional testing or action is required. Refer to the table below to see the different categories based on BMI that are used by the calculator.

Body mass rate

The Basal Metabolic Rate BMR Calculator estimates your basal metabolic rate—the amount of energy expended while at rest in a neutrally temperate environment, and in a post-absorptive state meaning that the digestive system is inactive, which requires about 12 hours of fasting. Exercise: minutes of elevated heart rate activity. Intense exercise: minutes of elevated heart rate activity. The basal metabolic rate BMR is the amount of energy needed while resting in a temperate environment when the digestive system is inactive. It is the equivalent of figuring out how much gas an idle car consumes while parked. In such a state, energy will be used only to maintain vital organs, which include the heart, brain, kidneys, nervous system, intestines, liver, lungs, sex organs, muscles, and skin. The BMR is measured under very restrictive circumstances while awake. An accurate BMR measurement requires that a person's sympathetic nervous system is inactive, which means the person must be completely rested. Basal metabolism is usually the largest component of a person's total caloric needs. The daily caloric need is the BMR value multiplied by a factor with a value between 1. In most situations, the BMR is estimated with equations summarized from statistical data. The Harris-Benedict Equation was one of the earliest equations introduced. It was revised in to be more accurate and was used up until , when the Mifflin-St Jeor Equation was introduced. Of these equations, the Mifflin-St Jeor Equation is considered the most accurate equation for calculating BMR with the exception that the Katch-McArdle Formula can be more accurate for people who are leaner and know their body fat percentage.

The dashed lines represent subdivisions within a major categorization. Male Female. Also, menopause can increase or decrease BMR depending on hormonal changes.

This calculator should only be used by adults. Pregnant or lactating women should not rely on these BMI results, and no action should be taken based on its values other than to consult a qualified person such as a doctor. If you think you have an eating disorder , the BMI calculator may not be suitable for you. For example, if you're 1. You can also do this in imperial measurements. But rather than working it out yourself you can use the BMI calculator above to find out which range you're in.

Use this calculator to understand how BMR affects your weight. Anisha Shah, MD, is a board-certified internist, interventional cardiologist, and fellow of the American College of Cardiology. Knowing your basal metabolic rate BMR helps you determine the estimated baseline amount of calories your body needs to function and serves as a starting point to determine how many calories you may want to consume based on your goals. Generally speaking, your BMR—which is sometimes referred to as resting metabolic rate—is the total number of calories your body needs to perform essential, life-sustaining functions. These basal functions include circulation, breathing, cell production, nutrient processing, protein synthesis, and ion transport. Using a mathematical formula, you can determine your BMR.

Body mass rate

Basal metabolic rate BMR is the rate of energy expenditure per unit time by endothermic animals at rest. Proper measurement requires a strict set of criteria to be met. These criteria include being in a physically and psychologically undisturbed state and being in a thermally neutral environment while in the post- absorptive state i. It follows the same criteria as BMR, but requires the documentation of the temperature at which the metabolic rate was measured. This makes BMR a variant of standard metabolic rate measurement that excludes the temperature data, a practice that has led to problems in defining "standard" rates of metabolism for many mammals.

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Caffeine is a common one. The body mass index BMI is a measure that uses your height and weight to work out if your weight is healthy. Pregnant women If you are pregnant, you will gain weight as your baby grows and from the fluid that cushions your baby in your womb. Children Because children are still growing, and boys and girls develop at different times, their BMI is measured differently. WHO Expert Consultation ; Appropriate body-mass index for Asian populations and its implications for policy and intervention strategies. Obesity - 25 to As can be seen from the list above, there are numerous negative, in some cases fatal, outcomes that may result from being overweight. So, keep an eye on your general health, diet, and exercise and track any changes in your weight. This would be considered unhealthy, while a younger person with higher muscle composition of the same BMI would be considered healthy. Intense exercise: minutes of elevated heart rate activity. A child or teen who is at the 95th percentile or above is considered obese. So, a boy on the 60th centile is heavier than 60 out of other boys of their age. Likewise, too much external heat can raise BMR as the body expends energy to cool off internal organs. Revised Harris-Benedict. Check your patient's BMI.

Food Assistance and Food Systems Resources. Adult BMI Calculator.

BMI is further influenced by factors such as age, sex, ethnicity, muscle mass, body fat, and activity level, among others. In some cases, being underweight can be a sign of some underlying condition or disease such as anorexia nervosa, which has its own risks. Consult your doctor if you think you or someone you know is underweight, particularly if the reason for being underweight does not seem obvious. In most situations, the BMR is estimated with equations summarized from statistical data. Generally, according to the CDC:. Pregnancy — Ensuring the livelihood of a separate fetus internally increases BMR. People over 60 As you get older, you tend to have more fat and less muscle. So, BMI may not be reliable if you're over Financial Fitness and Health Math Other. Although BMI is a widely used and useful indicator of healthy body weight, it does have its limitations. Page last reviewed: 28 November Next review due: 28 November You should speak to your doctor about how to lose weight and bring down your BMI to a healthy level.