Definition and cause of obesity

What is the cause of obesity? Overweight and obesity are defined as abnormal or excessive fat accumulation that presents a risk to health. A body mass index (BMI) over 25 is supposed to be overweight, and over 30 is obese. Obesity is a medical condition that occurs when a person has excess weight or body fat that might affect their health. According to the doctor if a person has a high body mass index than they are obese.

Body mass index (BMI) is a tool that doctors use to evaluate if a person is at an appropriate weight for their age, sex, and height. The measurement combines height and weight.

A BMI between 25 and 29.9 indicates that a person is carrying excess weight. A BMI of 30 or over suggests that a person may have obesity.

Other circumstances, such as the ratio of waist-to-hip size, waist-to-height ratio, and the amount and appearance of fat on the body also play a role in deciding how healthy a person’s weight and body shape are.

If a person does have obesity and excess weight, this can increase their risk of developing a number of health conditions. Such as metabolic syndromearthritis, and some types of cancer

Metabolic syndrome means a number of issues, such as high blood pressuretype 2 diabetes, and cardiovascular disease.

Keeping a healthy weight or losing through diet and exercise is one way to limit or reduce obesity. In some cases, a person may need surgery.

Causes of obesity?

Some reasons why obesity happens

Alt="image of food which causes obesity." Junk food
Too much calories

1) Food high in calories

Cause of Obesity

Likewise, When a person consumes more calories than they use as energy, their body will store the extra calories as fat. Therefore this can lead to the excess cause of obesity and weight.

Also, some types of foods are more likely to cause obesity and weight gain, particularly those that are high in fats and sugars.

Foods that tend to cause obesity and weight gain include:

  • fast foods
  • fried foods, such as french fries
  • fatty and processed meats
  • many dairy products
  • foods with added sugar, ready-made breakfast cereals, and cookies and baked food
  • foods containing hidden sugars, such as ketchup and many other canned and packaged food items
  • sweetened juices, sodas, and alcoholic drinks
  • processed, high-carb foods, such as bread and bagels

Some processed food products cause obesity to contain high-fructose corn syrup as a sweetener, including savoury items, such as ketchup.

Consuming too much of these foods and doing too little exercise can result in the cause of obesity and weight gain.

A person who eats a diet that consists mainly of fruits, vegetables, whole grains, and water is still at risk of gaining excess weight if they overeat, or if genetic factors, for example, increase their risk.

However, they are more likely to enjoy a varied diet while maintaining a healthy weight. Fresh foods and whole grains contain fibre, which makes a person feel full for longer and encourages healthy digestion.

2) Unhealthy lifestyle

Cause of Obesity

Regular physical activity can help prevent obesity. Many people lead a much more settled lifestyle than their parents and grandparents did.

Some of the sedentary habits include:

  • working in an office rather than doing manual labour
  • playing games on a computer instead of doing physical activities outside
  • going to places by car instead of walking or cycling

Also, physical activity affects how a person’s hormones work, and hormones have an impact on how the body processes food. The less a person moves around, the fewer calories they burn.

Several studies have shown that physical activity can help to keep insulin levels stable and that unstable insulin levels may lead to weight gain.

According to researchers, some studies make it hard to pick exact results, “A lifestyle including regular physical activity has been recognised as a key factor for maintaining and improving many aspects of health, including insulin sensitivity.”

Physical activity need not be training in the gym. Physical work, walking or cycling, climbing stairs, and household tasks all contribute. However, the type and intensity of activity may affect the degree to which it benefits the body in the short- and long-term.

3) Insufficient sleep

Cause of Obesity

Research has suggested that insufficient sleep increases the risk of gaining weight and developing obesity. Sleep deprivation significantly increased obesity risk in both adults and children. The changes affected children as young as 5 years of age.

The team suggested that sleep loss may lead to obesity because it can lead to hormonal changes that increase appetite.

When a person does not sleep enough, their body produces ghrelin, a type of hormone that arouses appetite. At the same time, a lack of sleep also results in a lower production of leptin, a hormone that suppresses the appetite.

4) Endocrine disruptors

Cause of Obesity

For instance, some study provides signs as to how liquid fructose, a type of sugar in beverages may modify lipid energy metabolism and leads to fatty liver and metabolic syndrome.

Peculiarities of metabolic syndrome include diabetes, cardiovascular disease, and high blood pressure. People with obesity are more likely to have metabolic syndrome.

Animal studies have been found that when obesity occurs due to fructose consumption, there is also a close link with type 2 diabetes.

The researchers note that “increased fructose intake may be an important predictor of metabolic risk in young people.”

Changes in the diets of young people can prevent these problems.

Avoiding high-fructose corn syrup

Cause of Obesity

In the first place ready to use sauces often contain high-fructose corn syrup, which is linked to a risk of obesity.

Similarly, foods that contain high-fructose include:

  • sugary drinks such as sodas, energy drinks, and sports drinks
  • candy and ice cream
  • coffee creamer
  • salad dressings, ketchup, and barbecue sauce
  • sweetened foods, such as yogurt, juices, and canned foods
  • in addition bread and other ready-made baked goods
  • also breakfast cereal, cereal bars, and “energy” or “nutrition” bars

For instance to reduce your intake of corn syrup and other additives:

  • check the labels before you buy
  • Such as opt for unsweetened or less processed items where possible
  • lastly, make salad dressings and bake other products at home

Some foods contain other sweeteners, but these can also have adverse effects.

5) Medications related to weight gain

Some medications can also point to weight gain.

Generally, some medicines caused people to gain weight over a period of months.

  • atypical antipsychotics, especially olanzapine, quetiapine, and risperidone
  • anticonvulsants and mood stabilizers, and specifically gabapentin
  • hypoglycemic medications, such as tolbutamide
  • likewise, glucocorticoids used to treat rheumatoid arthritis
  • also, some antidepressants used to treat depression

In the meantime yet, some medications may lead to weight loss. In this case, anyone who is starting a new medication and is concerned about their weight should ask their doctor whether the drug is likely to have any effect on weight.

6) Obesity self-perpetuating

Generally the longer period a person is overweight, the harder it may be for them to lose weight. Because of a protein, or gene, known as sLR11. Especially, this protein blocks the body’s ability to burn fat, making it harder to shed the extra weight.

7) Obesity gene

Accordingly, a type of faulty gene called the fat-mass and obesity-associated gene (FTO) is responsible for some cases of obesity.

For example, some link between this gene are:

  • obesity
  • some lifestyle habits that lead to obesity
  • also higher food intake
  • in addition, consuming high-calorie foods
  • a kind of disorder not getting signal, to feel full while eating, known as satiety

Accordingly, the hormone ghrelin plays a crucial role in eating behaviour. Ghrelin also affects the release of growth hormones and how the body accumulates fat, among other functions.


For the most part, many factors play a role in the development of obesity. In addition, Genetic features can increase the risk of some people.

A healthful diet that contains plenty of fresh food, together with regular exercise, will reduce the risk of obesity in most people.

However, those that have a genetic predisposition may find it harder to maintain a healthy weight. But some changes in lifestyle and pattern can even remove the toughest fat.

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