Scientific Diagnosis of Obesity: From Subjective Standards to Quantitative Measurement of Standard Weight and Body Mass Index (BMI)

Are you obese? Do you need to lose weight? The answer is actually quite simple, and the method is also very simple. Whether you are of average build, suffer from obesity phobia, or have obesity apathy, just get a checkup; the data will tell you whether you are obese. If you are not obese, of course you don't need to lose weight. However, if the data indicates that you are excessively obese, you should lose weight immediately. Obese people need to lose weight, and non-obese people do not. This is a very easy-to-understand principle, but in reality, it is often the thin people who want to lose weight, while obese people believe they are not fat, all because people have different standards for obesity. In fact, just getting a checkup will tell you whether you are obese.

To accurately determine if you are obese, you need to get checked. Once the data is available, your obesity status will be undeniable. There are many methods for diagnosing obesity, each with specific clinical significance. The most economical, convenient, and quickest method is to measure your weight. Weight is related to a person's height, gender, and age, and there are certain standards. To find out if you are obese, simply take out a standard weight chart, enter your height, age, and weight information, and you can get the result from the chart. Measuring obesity by weight is the quickest, most convenient, and most economical method, and most people can perform the test themselves.

There's a specific ratio between body density, weight, and fat. When the amount of fat in the body increases, both weight and density will be affected. A relatively simple method we can use is called "Body Mass Index" (BMI). While slightly less accurate, it's easy to do and most people can measure it themselves. There are certain standards for body fat content. Increased body fat can affect blood lipid levels, cholesterol levels, fat thickness, fat density, and the number of fat cells, among other things. There are many methods for diagnosing obesity, such as: standard weight, Body Mass Index (BMI), blood lipid levels, cholesterol levels, fat thickness, fat density, and the number of fat cells.

Human weight is related to age, sex, and height. Experts have linked these factors to establish standard weights. However, the data in standard weight charts can vary, as different countries, regions, and ethnicities can influence weight. Therefore, it is best to use a suitable standard weight chart when measuring weight. For Chinese individuals, the Chinese standard weight chart should be used. The following data is provided for reference: Standard weight (kg) for Chinese women, height 140cm-180cm, age 15-75. For example, a 160cm tall woman would have a standard weight of 53kg at age 31 and 57kg at age 51. Standard weight for Chinese men, such as a 172cm tall man, would have a standard weight of 61kg at age 31 and 64kg at age 51.

Obesity degree refers to the extent of a person's obesity. The measurement formula is as follows: Obesity degree = (Actual weight - Ideal weight) ÷ Ideal weight × 100%. The determination of obesity degree is as follows: ±10% is normal, over 10%-20% is overweight, over 20%-30% is mild obesity, over 30%-50% is moderate obesity, and over 50% is severe obesity. For example: Ms. Chen is 27 years old, 156cm tall, with an actual weight of 62kg and an ideal weight of 51kg. Her obesity degree is calculated to be 22%, classifying her as mildly obese. Mr. Li is 33 years old, 168cm tall, with an actual weight of 80kg and an ideal weight of 59kg. His obesity degree is calculated to be 36%, classifying him as moderately obese.

Standard weight is established based on factors such as sex, height, age, region, and ethnicity. However, for some people, age is a secret they don't want to reveal. Furthermore, we may not always have a standard weight chart readily available, making Body Mass Index (BMI) a more practical tool. BMI, also known as Body Mass Index, is a simple formula for calculating obesity; it only requires knowing your weight and height. The formula is as follows: BMI = weight (kg) ÷ height (m)². The relationship between BMI and obesity: <19 is underweight, 20-25 is normal, 25-30 is mildly obese, 30-40 is moderately obese, and >40 is severely obese.

For example, Ms. Chen is 1.60m tall and weighs 70kg. Her BMI is 70 ÷ 1.60² = 27.3, which is considered mildly obese. Body Mass Index (BMI) is a simple method for calculating obesity. Only when a person's weight exceeds the standard weight by 20% or more is it considered obese and requires weight loss. Since fat is an essential substance for the human body, and its storage serves as a reserve energy source, there is no urgent need to lose weight when the body stores only a small amount of fat. If a small amount of fat is stored in the body, it is harmless and there is no need to blindly pursue weight loss.