Understanding Obesity: Scientific Measurement from Body Mass Index to Body Fat Percentage
And its "multiple faces"
After all that, you may still have a vague concept of what obesity feels like.
So how is obesity defined? Following "international practice," let's first take a test.
How much do you know about obesity? Please judge whether the following statements are true or false.
(1) Obesity refers to excessive accumulation of body fat, with body weight exceeding 10% of normal weight.
(2) Obese people are heavy, and people who are heavy are also fat.
(3) If a person is 175cm tall, then his standard weight is 70kg.
(4) It is best to wear clothes, shoes and socks when measuring weight.
(5) It is best to use the same scale when measuring weight, and the scale should be calibrated before measurement.
(6) BMI stands for Body Mass Index. The formula for calculating BMI is: BMI = weight (kg) / height² (m²).
The standard BMI for children is the same as that for adults.
(7) For adult men, body fat accounts for 10% of body weight; for women, body fat accounts for 15% of body weight.
(8) Adult men with a waist circumference greater than 85cm need to reduce abdominal fat;
Adult women with a waist circumference greater than 80cm need to reduce abdominal fat.
(9) About two-thirds of the body's fat is stored in the subcutaneous tissue, so measuring skinfolds...
Thickness is somewhat significant in determining the degree of obesity.
(10) Obesity can be classified into central obesity, peripheral obesity, and uniform obesity.
Central obesity, also known as abdominal obesity, poses a greater threat to health.
(11) Obesity can be divided into primary obesity and secondary obesity, among which secondary obesity
More common.
(12) Obesity that occurs in adulthood is mainly due to the proliferation of fat cells.
(13) Obesity in women is closely related to ovarian dysfunction and menstrual disorders.
(14) It is common in children before the age of 1, 5-6 years old and during puberty.
(15) Middle-aged and elderly obese individuals have more fat
Accumulation in the abdomen leads to "central obesity," which is prone to...
It can cause coronary heart disease, hypertension, fatty liver, diabetes and other diseases.
Answer: (1) Wrong; (2) Wrong; (3) Right; (4) Wrong; (5) Right; (G) Wrong;
(7) Wrong; (8) Right; (9) Right; (10) Right; (11) Wrong; (12) Wrong; (13) Right;
(14) Correct; (15) Correct.
What is obesity?
Obesity refers to excessive accumulation or abnormal distribution of body fat, resulting in weight gain. It is a multifactorial condition.
Chronic metabolic diseases caused by [the disease]. Generally, being overweight is considered to be 10% above the ideal body weight, and exceeding [a certain percentage] is considered [a certain percentage].
20% is considered obese. Obesity is further classified according to the degree to which it exceeds the standard weight, into mild obesity (overweight) and mild obesity (overweight).
20%), moderate obesity (overweight 30%), and severe obesity (overweight 50%).
China was one of the first countries in the world to recognize obesity, as we mentioned earlier. (The Book of Rites)
The *Records of the Grand Historian* states, "Plump and full skin indicates obesity." Regarding the definition of obesity, Xu Shen of the Eastern Han Dynasty defined it in his *Shuowen Jiezi*.
The dictionary *Wen Jiezi* defines "肥" (féi) as "excessive flesh" and "胖" (pàng) as "half the body is flesh." So, what constitutes this excess fat?
Which part? He believed it was mainly the abdomen, hence the explanation of "fat person" in the Shuowen Jiezi: "one..."
The phrase "曰广肉" means "wide flesh," indicating that the flesh of the body increases from the abdomen outwards.
Some people may ask, if obese people are heavy, does that mean all heavy people are fat? The answer is no.
Certainly, obesity is defined as an accumulation of more than 20% of body fat above normal weight, not as...
Actual weight exceeds normal weight by more than 20%. Obese individuals are always heavier, while those with larger body weights...
This does not necessarily mean obesity; there is a difference between the two.
What constitutes standard body weight and ideal weight?
Body weight refers to the total weight of all parts of the human body, and it is affected by age, sex, diet, geographical environment, and other factors.
Due to factors such as genetics, body weight is constantly changing and does not remain relatively stable within a certain period.
Stable. Body composition is divided into two main parts: fat and non-fat. Body weight consists of fat weight and non-fat weight.
Weight composition.
Non-fat weight, also known as lean body mass, refers to the weight of organs and tissues such as internal organs, bones, and muscles.
Weight, except for muscle tissue, generally does not change much in the weight of other tissues and organs, so
Changes in lean body mass reflect changes in muscle mass, while fat mass, also known as body fat percentage, fluctuates more significantly.
Civil servant Xiao Li and fitness coach Xiao Sun are neighbors. Coincidentally, they are very similar in height and weight.
They all seem to be around 178cm tall and weigh around 90kg. This is what their friends think of Xiao Li's appearance.
He was chubby and cute, and some people even gave him the nickname "Fatty Li."
He didn't feel the same way about Xiao Sun; on the contrary, he thought Xiao Sun was very strong. Clearly, Xiao Li was underweight.
The percentage of body fat is much higher than that of Xiao Sun, so even though the two are similar in height and weight, they are...
They are completely different in appearance.
If you've ever followed topics related to obesity, then these two terms are certainly familiar to you.
11) Standard weight: This is a fixed value, and the calculation formula varies at different age stages.
Weight (kg) for 1-6 months = Birth weight (kg) + Age in months × 0.7 (kg)
Weight (kg) for 7-12 months = Birth weight + 4.2 (kg) = (Age in months - 6) × 0.7 (kg)
Weight (kg) for children aged 2-12 years = Age × 2 (kg) + 8 (kg)
Standard adult weight (kg) = Height (cm) - 105
(2) Ideal weight: This is a range around the standard weight. It is generally believed that the standard weight...
The ideal weight range is within 10% of your body weight plus or minus 10%.
For example, an adult who is 175cm tall should have a standard weight of 175-105=70kg.
A 10% fluctuation, or an increase of 7kg, brings the ideal weight range to 63-77kg. (WHO)
The standard is that ideal weight should be within ±10% of the standard weight.
In daily life, it's difficult to determine whether our body fat percentage exceeds our weight.
If 20% of people are obese, then determining whether someone is obese requires some easily identifiable criteria. Let's take a look.
The list of indicators helps you comprehensively, objectively, and scientifically assess your own obesity status.
One evaluation.