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What are the causes of obesity

Obesity is an abnormal or excessive accumulation of fat, which may cause a health hazard, and it can be classified whether a person suffers from obesity, or not, through the use of the body mass index, which is an indicator to measure body weight in kilograms to the square of his height in meters A person is considered obese if the body mass index is equal to 30 or more, while if the index is equal to 25 or more, then this is classified as an increase in weight, and obesity and being overweight are considered risk factors for many chronic diseases.

Causes of obesity:

Where there are many factors that cause obesity and weight gain, and the most important of these causes are the following:


Where obesity is related to genetics; Where a child is more likely to become obese if his parents are obese, but that depends on other factors, such as the nature of the food; Where it was found that obesity rates in non-industrial cities increased after the start of the Western diet, although the genes did not change, but environmental factors changed, and on the other hand, studies indicated that genes have an effect on the ability to gain weight.

 Processed foods:

Where processed foods contain refined ingredients and additives; These foods are manufactured with a focus on making them delicious, inexpensive, and with a long shelf life. To attract the consumer, and this leads to overeating, and on the other hand, manufacturers of these foods may use methods to increase the percentage of sales.

 Food addiction:

  Many processed foods are a high-fat stimulant, and sugars are the reward system in the brain. These foods can be addictive in people who are predisposed to this, as the sufferer loses control over his eating behavior.


As the hormone insulin plays an important role in regulating energy stores in the body; Where it urges the fat cells in the body to store fat, and keep the fat already in it, and it is worth noting that following the Western diet may increase insulin resistance in the body in obese people, which leads to the storage of energy inside fat cells instead of providing it for use in the body And, many studies have indicated that high insulin levels may be one of the causes leading to obesity, and on the other hand, insulin levels can be reduced by abstaining from simple sugars and refined carbohydrates, and increasing the intake of dietary fiber.

 some medicine:

Where many types of drugs cause weight gain, and these drugs include antidepressants, diabetes drugs, and antipsychotics, as these drugs change the functions of the body and the brain, by increasing the appetite or reducing the metabolism rate.

 Leptin resistance:

Where the hormone leptin is produced by fat cells, and its levels in the blood increase with the increase in fat mass in the body. Therefore, leptin levels are high in people with obesity, and it can be said that high leptin in healthy people is associated with a decrease in their appetite, but it does not work in the same way in obese people, as in this case it cannot exceed the blood-brain barrier, and this condition is called leptin resistance, which is It is one of the factors that cause obesity.


 Using sugar can be one of the worst aspects of the modern diet. Its excess consumption leads to a change in hormones and biochemistry in the body, and its consumption is linked to weight gain, and added sugar consists of glucose and fructose, and glucose can be obtained from other food sources, such as carbohydrates, but most of the consumed amounts of fructose come from sugar. Eating excessive amounts of fructose can lead to insulin resistance, increase insulin levels in the body, and it does not promote a feeling of fullness like glucose, and because of these factors, added sugar may help increase energy storage, which leads to obesity.

Lack of physical activity:

Most people nowadays follow an inactive lifestyle. This is due to the use of devices and modern means of transportation, and the lack of movement may reduce the amount of calories that the body burns, and studies have indicated that physical activity has a positive effect in regulating insulin levels. Whereas, its instability in levels may be associated with weight gain.

 Lack of sleep:
 one study indicated that people who do not sleep sufficiently long are twice as likely to develop obesity. As sleep deprivation leads to stimulation of the hormone ghrelin, which increases appetite, on the other hand, lack of sleep leads to the production of less amounts of the hormone leptin, which reduces appetite.