Is being overweight the same as obesity?

Written by Zhang Jun Jun

Endocrinology

Updated on July 03, 2025

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Obesity is a condition in our body where fat distribution is abnormal or where there is excessive fat accumulation leading to weight gain. Being overweight and obese are different degrees of weight issues, with obesity being more severe than being merely overweight. One standard for defining obesity relies mainly on the Body Mass Index, or BMI. The formula for BMI is weight in kilograms divided by the square of height in meters. When someone's BMI is equal to or greater than 24 kg/m², they are considered overweight, and when it is equal to or greater than 28 kg/m², they are considered obese. Thus, the classification of overweight and obesity primarily depends on the BMI value.

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Written by Chen Li Ping

Endocrinology

1min 18sec

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Will obesity be inherited?

The primary cause of simple obesity, where the reason for being overweight is unclear, is an energy intake that exceeds energy expenditure. There are also certain genetic factors involved. Generally, it is believed that susceptibility to obesity varies among human races, along with the presence of obesity genes and variations in genes related to obesity. Additionally, an individual’s metabolic type, appetite, digestive absorption functions, sleep quality, and metabolic efficiency form the basis for the development of simple obesity. Poor lifestyle habits, such as insufficient physical activity and excessive energy intake, are necessary conditions for its occurrence. Epidemiological surveys have shown that most people with simple obesity have a familial tendency towards the condition. Children born to obese parents are 5-8 times more likely to develop simple obesity than those born to parents who both have a normal weight. However, the majority of cases of simple obesity are not caused by obesity genes or mutations in genes related to obesity.

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Written by Tang Zhuo

Endocrinology

41sec

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What diseases are people with obesity prone to?

Obesity, also known as adiposis, is a chronic metabolic disease caused by excessive accumulation or abnormal distribution of body fat. It results from the interaction of multiple factors, including genetics and environmental elements. Patients with obesity have a significantly increased incidence of hypertension, coronary heart disease, type 2 diabetes, dyslipidemia, sleep apnea, cholecystitis, cholelithiasis, osteoarticular diseases, and certain tumors and cardiovascular diseases are closely related to obesity.

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Written by Li Lang Bo

Endocrinology

1min 6sec

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What are the dietary restrictions for obesity?

If it's obesity, it means a body mass index (BMI) greater than 28. In terms of dietary restrictions for obesity, the general principles are low salt and low fat. First and foremost, intake of fats should be limited, including both the cooking oils and foods consumed. Preference should be given to vegetable oils, and consumption of animal fats should be minimized. Even with vegetable oils, there is a limit to how much should be used, as excessive amounts can also exceed health standards. Furthermore, one should eat less fast food and junk food, such as various fried foods or those containing excessive seasonings, and these foods should be consumed minimally. There are also "invisible" fats to consider, such as those found in nut snacks and various small packaged snacks like peanuts and fried beans, which are very high in calories and should be consumed less. Additionally, sugary drinks like iced tea and pear syrup drinks should be avoided. The overall principle is a low-calorie diet, avoiding high-calorie foods.

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Written by Li Lang Bo

Endocrinology

1min 16sec

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What department do you see for obesity?

The preferred specialty is endocrinology and metabolism because obesity itself is a metabolic disease. Besides the commonly known simple obesity, there is also a type called secondary obesity. The distinction between the two is that in simple obesity, the body does not suffer from any other disease; weight gain is merely caused by unscientific diet, irregular lifestyle, and lack of exercise, which can be resolved through some scientific methods. Another type is called secondary obesity, such as a common disease in endocrinology called Cushing's syndrome. It is caused by a tumor or hyperplasia in the pituitary or adrenal glands, or other reasons that lead to an excessive secretion of cortisol in the blood, consequently causing a redistribution of body fat, leading to moon face, buffalo hump, and accumulation of subcutaneous fat in the abdomen. Common in endocrinology, hypothyroidism can also lead to weight gain. This requires endocrinology specialists to diagnose and identify the specific condition in order to provide appropriate treatment.

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Written by Tang Zhuo

Endocrinology

1min 29sec

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Obesity is formed in what way?

Obesity, also known as adiposity, is a chronic metabolic disorder caused by an excessive accumulation of fat in the body or abnormal fat distribution. The exact causes of obesity are not clear, but it is generally believed to be the result of the interaction of multiple factors including environmental and genetic factors. In terms of environmental factors, there is a tendency for obesity to cluster in families; individuals with one or both parents who are obese have a significantly increased likelihood of being obese themselves. The second factor is environmental influences. Consuming more calories than are expended is the primary cause of obesity. Additionally, sedentary lifestyles, lack of physical exercise, and insufficient physical activity all contribute to reduced energy expenditure, leading to obesity. Poor dietary habits, such as eating large portions, a preference for sweets, or oily foods, also increase calorie intake and contribute to the occurrence of obesity. Furthermore, genetic mutations can also lead to obesity. Another viewpoint suggests that childhood obesity can increase the incidence of adult obesity, with people who were obese after the age of six having a more than 50% chance of being obese in adulthood.