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Obesity

Professionally updated: January 12, 2026

Obesity is a condition where a person's body weight exceeds what is considered healthy for a given height. This can be due to a combination of genetic, environmental, and behavioral factors. While some degree of body fat is necessary to maintain health and energy, too much fat can lead to health complications.

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Jakob Fraes
Specialist in General Medicine, Ph.D.
Read more about Obesity. Everything you should know.

Fat and body function

Fat is not just a passive storage of calories. It is an active organ that produces hormones and signaling substances that affect many processes in the body. Too high levels of body fat can disrupt these signals and lead to health challenges.

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Health complications

When the body carries extra weight, it can lead to a number of health challenges, including heart disease, type 2 diabetes, and certain types of cancer. These conditions can worsen if the excess weight is not managed effectively.

Genetics and environment

While some people are genetically predisposed to having a higher body weight, the environment also plays a big role. This includes diet, physical activity, and even the social environment, which can affect our eating and exercise habits.

Mental aspects

Obesity can also have psychological effects. Some people may experience low self-esteem, depression, or anxiety due to their weight. It is important to address these feelings and seek support if necessary.

Treatment options

There are many ways to manage obesity, from diet and exercise to medication and surgery. The best approach depends on the individual's situation and needs. A healthcare professional can provide guidance on the most effective strategies.

Prevention and lifestyle

Preventing or managing obesity often requires lifestyle changes. This may include healthier eating habits, regular exercise, and stress management. These habits can not only help with weight control but also improve overall well-being.

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Frequently asked questions about being overweight

What is the difference between being overweight and obese?

Overweight and obesity both refer to a body weight that is higher than recommended for a given height. The difference lies in the degree of excess weight. Obesity is a more severe degree of overweight and is often defined using the body mass index (BMI).

Is being overweight always a result of consuming too many calories?

No, while overeating calories can lead to being overweight, other factors such as genetics, metabolism, hormonal imbalances, and certain medical conditions can also play a role.

How can I find out if I am overweight?

The most common method is to calculate your body mass index (BMI) using your weight and height. A BMI between 25 and 29.9 is considered overweight, while a BMI of 30 or higher is considered obesity.

How can I reduce the risk of health complications associated with being overweight?

A combination of a healthy diet, regular exercise, regular check-ups, and possible medical intervention can help manage and reduce the risk.