What Are the Obesity Classes? What Are the Obesity Classes? The different obesity classes and their associated risk of other health problems, or comorbidities, are categorized as follows.e60dc2a1-f33c-4a05-9b50-8e3e8e597629415fdb2c-ef71-48ba-8dea-9c57182c8ad5
Resources We Trust Cleveland Clinic: What’s a Healthy BMI? Mayo Clinic: Mayo Clinic BMI and Waist Circumference Calculator Centers for Disease Control and Prevention: Adult Obesity Facts American Heart Association: Understanding Extreme Obesity and What You Can Do American Society for Metabolic and Bariatric Surgery: Disease of Obesity
Obesity grading is a way that healthcare providers classify different types of obesity . An individual is considered to have obesity if they weigh more than what is deemed healthy for their specific height. Obesity can increase one’s risk of developing other serious conditions, such as diabetes , heart disease , and cancer .e60dc2a1-f33c-4a05-9b50-8e3e8e597629415fdb2c-ef71-48ba-8dea-9c57182c8ad5 The obesity grading system divides obesity into three main groups. It uses body mass index (BMI) , a ratio of weight to height, to categorize a person’s obesity class. Healthcare providers may also use waist circumference measurements and other tools to assign an obesity class.e60dc2a1-f33c-4a05-9b50-8e3e8e597629415fdb2c-ef71-48ba-8dea-9c57182c8ad5 Obesity class categories can help doctors recommend more tailored, appropriate treatment for people with obesity, as well as better predict their health outcomes.e60dc2a1-f33c-4a05-9b50-8e3e8e5976295b8cf476-afcc-4d44-84e2-00accf1ad3a1
How They Affect Treatment Do Treatment Options Differ by Obesity Class? Available treatments for obesity include lifestyle changes, medications, surgery, and therapy. Knowing a person’s specific class of obesity can help doctors determine which treatments may be most beneficial.e60dc2a1-f33c-4a05-9b50-8e3e8e59762995615e5c-7f18-4555-b5ef-375bf0139b1a Lifestyle Changes Lifestyle changes are an important part of treatment for all obesity classes. The following approaches can help promote weight loss:e60dc2a1-f33c-4a05-9b50-8e3e8e597629cd9d7bcc-8f1d-4f82-ab8c-20b1cfe3c4d3 Diet Changes Consuming fewer calories and eating more whole and minimally processed foods can help you better manage your weight. A slow but consistent approach usually works best. If you have obesity, consider working with a registered dietitian-nutritionist who can help you come up with an eating plan. Exercise Physical activity can help you shed pounds. The baseline recommendation for all adults, including those with obesity, is a minimum 150 minutes of moderate-intensity exercise a week, which should include full-body strength training twice a week. People with obesity are encouraged to aim for 200 to 300 minutes of exercise each week.e60dc2a1-f33c-4a05-9b50-8e3e8e5976297df2daa5-25ba-49b2-8fbd-9957044e4f8b Behavior Modification Programs Individual and group counseling, as well as peer support groups, can help you implement and stick with the healthy lifestyle changes needed to manage obesity successfully. Medications Weight loss medications are an option for people with class 1, class 2, and class 3 obesity. Individuals with a BMI of 27 to 29.9 (in the overweight class) may also be candidates if they have at least one obesity-related health condition.e60dc2a1-f33c-4a05-9b50-8e3e8e5976296a23f28b-a209-41d1-b456-a6c767729342 Common medications used to treat obesity include the following:e60dc2a1-f33c-4a05-9b50-8e3e8e5976296a1bf569-5f54-44df-b680-fe30a6fa4d0a diethylpropion (Tenuate) liraglutide (Saxenda) naltrexone-bupropion (Contrave) orlistat (Alli) phendimetrazine (Bontril) phentermine-topiramate (Qsymia) semaglutide (Wegovy) tirzepatide (Zepbound) Surgery Weight loss surgery , known as bariatric surgery, is typically an option for adults with a BMI of 35 or higher, or a BMI of 30 or higher with obesity-related comorbidities; or for those in whom medication and lifestyle changes aren’t working. The newest recommendations from the American Society for Metabolic and Bariatric Surgery and the International Federation for the Surgery of Obesity and Metabolic Disorders suggest that bariatric surgery should be recommended for all adults with class 2 and class 3 obesity regardless of whether they have other health conditions. They also recommend surgery for adults with class 1 obesity and a metabolic disease, especially type 2 diabetes. Surgical guidelines differ for children, adolescents, and people of Asian heritage.e60dc2a1-f33c-4a05-9b50-8e3e8e5976295667d416-0f15-4a5f-a427-e9d6f2647b20 Common bariatric procedures include the following:e60dc2a1-f33c-4a05-9b50-8e3e8e597629ec66027c-80b1-4136-b366-ccdb4dd65955 Gastric Sleeve Surgeons remove a large part of the stomach and leave behind a smaller part, which resembles a sleeve. Gastric Bypass A small part of the stomach is connected to the middle of the intestine, allowing food to flow through the smaller part and bypass the upper intestine. Biliopancreatic Diversion With Duodenal Switch This surgery involves two separate procedures. First, a surgery similar to gastric sleeve is performed. Then the small intestine is divided into two tracts. Food moves through one of them and bypasses most of the small intestine. Therapy Counseling and behavior modification programs can help people with obesity reach their weight loss goals. Talking with a mental health professional may help you understand your triggers and change unhealthy habits. Support groups can also be a good forum for connecting with others and sharing your struggles.e60dc2a1-f33c-4a05-9b50-8e3e8e597629cd9d7bcc-8f1d-4f82-ab8c-20b1cfe3c4d3
Some doctors and researchers further divide class 3 obesity into two categories:e60dc2a1-f33c-4a05-9b50-8e3e8e5976299b2b5e39-1e86-4c80-ba7d-d920f40ff590 Super Obesity BMI of 50 to 59.9 Super-Super Obesity BMI of 60 or more
The Takeaway Healthcare providers use an obesity grading system primarily based on BMI to categorize obesity into three distinct classes. Class 1 (a BMI of 30 to 34.9) and class 2 (a BMI of 35 to 39.9) represent increasing levels of health risk, while class 3 (a BMI of 40 or higher, or 35 or higher with comorbidities) indicates the highest risk for developing serious related health conditions and significantly reduced life expectancy. Higher obesity classes are directly linked to an increased likelihood of developing comorbidities such as type 2 diabetes, heart disease, sleep apnea, and certain types of cancer. Identifying a person’s specific obesity class allows doctors to tailor their treatment, ranging from lifestyle changes and medications to bariatric surgery.
Obesity Class Health Risks Does Obesity Class Affect Health Risks and Outcomes? All classes of obesity can increase a person’s chances of developing other health conditions. Potential health risks associated with obesity include the following:e60dc2a1-f33c-4a05-9b50-8e3e8e597629415fdb2c-ef71-48ba-8dea-9c57182c8ad5 Breathing problems, such as asthma or obesity hypoventilation syndrome Certain types of cancer Depression Diabetes High blood pressure High cholesterol and triglyceride levels Heart problems, such as arrhythmia (irregular heart rhythm), coronary artery disease, and heart failure Liver problems Osteoarthritis Reproductive and sexual health problems Sleep apnea Stroke While these risks can affect anyone with obesity, people with class 3 obesity tend to have the worst outcomes. The higher your BMI and the higher your obesity class, the greater your odds of having other obesity-related health problems.e60dc2a1-f33c-4a05-9b50-8e3e8e597629a1d67d22-f107-4de4-ac16-1a4e5697dbd6 For instance, for every five-unit increase in BMI, a person’s risk for coronary heart disease increases by 30 percent. Additionally, every unit increase in BMI increases one’s risk of developing atrial fibrillation (an irregular heartbeat) by 5 percent.e60dc2a1-f33c-4a05-9b50-8e3e8e59762910869e9d-2e28-410e-98a5-48438246d1ba A greater degree of obesity also raises a person’s overall mortality risk. Class 3 obesity is associated with substantially elevated mortality rates as a result of obesity complicationse60dc2a1-f33c-4a05-9b50-8e3e8e59762994f2d020-9d8b-447e-b3ec-51cd04b956e4 and may shorten a person’s life expectancy by up to 14 years.e60dc2a1-f33c-4a05-9b50-8e3e8e59762944a6cd50-32dd-452b-8ad9-08697bba4baf
Defining Obesity Classes How Obesity Classes Are Defined Experts generally rely on BMI measurements to define obesity classes.e60dc2a1-f33c-4a05-9b50-8e3e8e5976295b8cf476-afcc-4d44-84e2-00accf1ad3a1 Calculate your BMI by dividing your weight in kilograms (kg) by the square of your height in meters (m 2 ).e60dc2a1-f33c-4a05-9b50-8e3e8e597629f0623584-e5b6-422a-8f43-648003d54f1d There are also many online tools to help you determine your BMI, such as the BMI calculator from the Centers for Disease Control and Prevention. Although BMI can be a helpful tool, it’s not an accurate health assessment for everyone. For instance, a person with a lot of lean muscle mass (which is naturally heavier than fat mass) may have a high BMI but not necessarily have obesity. On the other hand, a person may not have a very high BMI but still experience complications from excess body weight, especially if they’re older or have low muscle mass. For this reason, healthcare providers may use other methods — such as waist circumference measurements, skin thickness assessments, and body composition scales — to diagnose obesity.e60dc2a1-f33c-4a05-9b50-8e3e8e597629415fdb2c-ef71-48ba-8dea-9c57182c8ad5
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