How is Body mass index (BMI) calculated?

Body mass index, or BMI, counts on a person's body weight (in kilograms) divided by the square of the person's height (in meters). Counting on someone's BMI turns out to be one of the most inexpensive methods for screening your weight category. Weight category refers to the conditions like underweight, healthy weight, overweight, and Obese. BMI determines the weight category of a human and is moderately connected with measuring body fat. To help you calculate BMI count, you can use a BMI calculator.

How BMI is used?

BMI is a screening tool that diagnoses your weight gain or weight loss. But BMI cannot determine the fatness quotient of the human body or the health condition of every individual. A higher BMI could be an indication of health risk which needs a visit to a professional healthcare provider.  

BMI trends in the U.S.A for adults

Since 1970, the prevalence of adult BMI equal to the obese status of 30 kg/m2 has increased. Furthermore, Obesity is growing continuously among older women 60 years of age and above.

What is a BMI Calculator?

As you know, BMI is all about the body mass you have in connection with Weight and Height. A BMI calculator refers to an offline or online device that helps measure an individual's body mass index.
How do you count BMI?
It is easy to calculate BMI, and the process is the same for adults and children. However, for BMI calculation, you have to follow a basic formula.
The Measurement Units you need for BMI calculation are Kilograms and meters or centimetres.
The Formula of BMI count: Weight (kg) / [height (m)]2
The BMI calculation includes weight in kgs divided by the height in meters squared. People generally measure Height in cms. All you have to do is convert the same into meters and calculate.

The BMI calculator works like,
Weight = 70 kg, Height = 166 cm (1.66 m)
Calculation: 70 ÷ (1.66)2 = 21.08

To calculate BMI in Pounds and inches, you can go like this.
The BMI count Formula: weight (lb) / [height (in)]2 x 703
When you have the weight count in pounds (lbs), you can get the BMI by dividing the weight by Height in inches (in) squared. Multiply the result with a conversion factor of 703.

For instance, The BMI calculator works like this,
Weight = 160 lbs, Height = 5’5″ (65″)
Calculation: [160 ÷ (65)2] x 703 = 25.96

How BMI is interpreted for adults

BMI is interpreted with the help of weight categories for 20 years old and above the age. The BMI calculator works equally for both men and women. No matter how old they are or what type of body they have, the BMI calculator works similarly for all.
The standard weight status category is connected with BMI count. When the BMI is below 18.5, it will be considered underweight. For the BMI count of 18.5 – 24.9, weight status is regarded as Healthy weight. With a BMI count of 25 – 29.9, the person is considered Overweight, whereas a BMI of 30 and above is considered as Obesity.
For instance, there are specific weight ranges and weight status categories for a person who is 5′ 8″. A weight of the person is 123 lbs or less for a person of 5′ 8″ has a BMI of less than 18.5. Therefore, the weight status is considered underweight. The weight range of 124 lbs to 166 lbs has a BMI count of 18.5-24.9, referring to a healthy weight. With a weight band of 167 lbs to 200 lbs, the BMI count will be 25 – 29.9, considering Overweight. The weight band of 201 kg and more leads to a BMI count of 30 and above, which states Obesity. The BMI interpretation depends on both the sex and age of teens and children. But for adults, it does not depend on their age or sex.  

How BMI interpretation is made for children and teens

Using the same formula for adult BMI, you can make the BMI interpretation for children and teens. Though the BMI count for children and teens is sex and age-based, the formula remains the same. So, why does this BMI count depend upon age and sex for them? It is so because body fat amount is different for boys and girls. It creates a difference in BMI percentile and, thereby, the whole BMI interpretation.

How BMI indicates body fatness

Though the relation between BMI and body fat amount is relatively strong, people with the same BMI can have different body fatness. Believe it or not, research says that women are having same BMI as men but have more body fat. In the same way, older people have a higher amount of body fat than younger ones. The athletes and non-athletes have different amounts of body fat in the exact BMI count. Athletes have higher BMI levels for their muscularity other than body fat. Someone with a higher BMI and extra body fat is classified as obese.

Health consequences due to high BMI levels

Undoubtedly, people with Obesity tend to face more health issues than others. Several health issues may take place when you have a higher BMI level. Some of those are,
-Increased rate of mortality
-Hypertension
-Coronary heart disease
-High blood pressure
-A higher level of LDL cholesterol whereas lower level of HDL cholesterol
-High triglycerides level
-Type 2 diabetes
-Severe Gallbladder issues
-Breathing issues and insomnia
-Increased level of Oxidative stress
-Difficulty in physical pain
-Osteoarthritis
-Even chances of different cancers like breast, liver, endometrial, and more may increase when you have obesity issues.
-Mental issues such as anxiety, depression, and several other mental disorders

Men and women with the same BMI may have different body fat amounts. Women with a BMI level of 35 tend to have the same health issues as men with the same BMI. Ideal BMI helps to live a healthy life and one could easily maintain an ideal BMI level by following a healthy lifestyle, taking balanced diet and including exercise in daily life.

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