What are the weight classifications according to measured BMI?

  • Underweight -
  • Normal Weight - 18.5 to 25 BMI
  • Overweight - 25 to 30 BMI
  • Obesity (Class I) - 30 to 35 BMI
  • Obesity (Class II) - 35 to 40 BMI
  • Morbid Obesity (Class III) - > 40 BMI

Obesity is a medical condition characterized by excessive body fat accumulation, which can lead to negative health consequences.

It is typically defined as having a body mass index (BMI) of 30 or higher, which is calculated as a person's weight in kilograms divided by their height in meters squared.

  • More than 65% of adults are overweight or obese
  • 34% of Americans are considered obese
  • 5% of Americans are considered morbidly obese
  • 325,000 obesity-related deaths occur annually
  • Total medical cost for obesity in 2003 was $75 billion

Obesity is a complex condition that can result from a combination of genetic, environmental, and lifestyle factors, including a diet high in calories, physical inactivity, and poor sleep habits. Certain medical conditions and medications can also contribute to obesity.

Read more about the causes of obesity

Obesity is associated with a range of health problems, including type 2 diabetes, cardiovascular disease, high blood pressure, stroke, certain types of cancer, and joint problems. It can also increase the risk of depression and other mental health issues.

Read more about the health risks of obesity

Treatment for obesity typically involves lifestyle changes such as adopting a healthy diet and increasing physical activity. In some cases, medications or weight loss surgery may be recommended.

Read more about treatments for obesity

Prevention of obesity is important, as it can be difficult to reverse once it has developed. This includes adopting healthy lifestyle habits such as maintaining a healthy diet, getting regular exercise, and getting adequate sleep. It is also important to address underlying medical conditions that may contribute to obesity.

Causes of Obesity

Obesity is a complex condition that can result from a combination of genetic, environmental, and lifestyle factors including:


Consuming a diet that is high in calories, sugar, and fat, and low in fiber and nutrients can contribute to weight gain and obesity. This includes consuming a lot of processed foods, fast foods, and sugary drinks.

Physical inactivity

Lack of physical activity is another common cause of obesity. Sedentary lifestyles and jobs that require long periods of sitting can make it difficult to burn calories and maintain a healthy weight.


Genetics can play a role in obesity. Studies have found that children of obese parents are more likely to be obese themselves, and there are specific genes that have been linked to obesity.

Medical conditions

Certain medical conditions such as hypothyroidism, Cushing's syndrome, and polycystic ovary syndrome can contribute to weight gain and obesity.


Some medications such as corticosteroids, antidepressants, and antipsychotics can cause weight gain as a side effect.

Psychological factors

Emotional eating, stress, and other psychological factors can also contribute to obesity. For example, people who use food as a way to cope with stress or emotional issues may be more likely to become overweight or obese.

Sleep deprivation

Poor sleep habits and sleep deprivation have been linked to weight gain and obesity.

Environmental factors

Environmental factors such as access to unhealthy foods, food marketing, and urbanization can also contribute to obesity.

Health risks associated with Obesity

Obesity is a serious medical condition that can lead to a range of health problems. Health risks associated with obesity include:

Type 2 diabetes

Obesity is a major risk factor for developing type 2 diabetes. Excess body fat can interfere with the body's ability to use insulin properly, leading to insulin resistance and high blood sugar levels.

Cardiovascular disease

Obesity can increase the risk of developing heart disease and stroke. This is because excess body fat can lead to high blood pressure, high cholesterol, and inflammation, all of which are risk factors for cardiovascular disease.

High blood pressure

Obesity can lead to high blood pressure, which is a major risk factor for heart disease, stroke, and kidney disease.

Joint problems

Obesity can put extra stress on the joints, leading to joint pain and osteoarthritis.

Sleep apnea

Obesity is a major risk factor for sleep apnea, a condition in which breathing is interrupted during sleep.

Certain types of cancer

Obesity is associated with an increased risk of certain types of cancer, including breast, colon, and kidney cancer.

Fatty liver disease

Obesity can lead to the accumulation of fat in the liver, which can cause inflammation and damage to the liver.

Mental health problems

Obesity has been linked to an increased risk of depression, anxiety, and other mental health problems.

Reproductive problems

Obesity can cause hormonal imbalances that can lead to infertility and other reproductive problems.

Chronic inflammation

Obesity can lead to chronic inflammation, which has been linked to a range of health problems, including heart disease, diabetes, and cancer.

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The Treatment for Obesity – Weight Loss

The best treatment for obesity may vary depending on individual factors such as medical history, lifestyle, and preferences. Here are some of the most common options:

Lifestyle changes

Making healthy lifestyle changes such as adopting a healthy diet and increasing physical activity is often the first line of treatment for obesity. This can include reducing calorie intake, eating a diet high in fruits, vegetables, and whole grains, and engaging in regular physical activity.

Learn More Here


In some cases, medications may be prescribed to help with weight loss. These medications may work by reducing appetite, increasing feelings of fullness, or preventing the absorption of fat.

Learn More Here

Weight loss surgery

Weight loss surgery, also known as bariatric surgery, is a treatment option for people with severe obesity. The most common types of weight loss surgery include gastric bypass surgery, sleeve gastrectomy, and adjustable gastric banding. These surgeries work by reducing the size of the stomach or bypassing part of the small intestine, leading to reduced calorie intake and weight loss.

Learn More Here

Behavior modification

Behavior modification techniques, such as cognitive-behavioral therapy, can be used to help individuals identify and change unhealthy eating and exercise behaviors.

Learn More Here

Support groups

Joining a support group or working with a registered dietitian or weight loss counselor can provide encouragement and accountability for making healthy lifestyle changes.

Learn More Here

Lifestyle changes, behavior modification and a support group

That’s us!

Weight Crafters combines lifestyle changes, behavior modification, and support group benefits to help clients lose weight and improve their overall health. The program is designed to help clients make sustainable changes to their diet and exercise habits, and to provide them with the tools and support they need to achieve their weight loss goals.

At Weight Crafters, clients work with our experienced team to develop a personalized weight loss plan that is tailored to their individual needs and goals. The program includes a combination of healthy eating, regular exercise, and behavior modification techniques designed to help clients make lasting changes to their lifestyle.

One of the key components of the Weight Crafters program is behavior modification. Clients learn techniques for managing stress and emotions, developing healthy habits, and avoiding triggers that can lead to overeating or unhealthy behaviors. They also receive support and encouragement from a team of experienced coaches and fellow clients, which helps them stay motivated and on track with their weight loss goals.

The Weight Crafters program also focuses on nutrition education and healthy eating habits. Clients learn how to enjoy healthy meals that are rich in nutrients and low in calories, and they receive guidance on how to make healthy choices when dining out or traveling.

The program also includes a variety of fitness activities designed to help clients build strength, improve cardiovascular health, and burn calories. Activities may include group fitness classes, outdoor adventures, and individualized workout plans developed by certified trainers.

The Weight Crafters program provides a comprehensive approach to weight loss that combines lifestyle changes, behavior modification, and support groups to help clients achieve their weight loss goals and improve their overall health and well-being.

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