Which of the following is correct? [originaltext] Obesity is a disease charac

Obesity is a disease characterized by abnormal or excessive fat accumulation that may impair health. It is a global health epidemic with more than 650 million people affected worldwide, according to the WHO 2016 statistics. Obesity is a contributing factor to many diseases, including diabetes, cardiovascular disease, and certain cancers.
    The medical definition of obesity is based on the calculation of body mass index (BMI), a formula of weight in kilograms divided by height in meters squared. A normal BMI is between 18.5 and 24.9. Overweight is defined as a BMI of 25.0 to 29.9, and a BMI of 30.0 or greater is obese. The diagnosis of morbid obesity is applied at a BMI of 40.0 or greater.
    The primary symptom of obesity is an excessive or abnormal amount of body fat. Carrying around extra weight can also lead to other symptoms, including feeling out of breath, increased sweating, snoring, fatigue, back and joint pain, low confidence and self-esteem, and feelings of isolation.
    In addition, obesity can lead to other health problems including hypertension, high cholesterol, type 2 diabetes, and stroke.
    Obesity is caused by an energy imbalance between calories consumed and calories expended, although some people are more predisposed to obesity than others.
    Environmental factors that contribute to obesity include leading a sedentary lifestyle, consuming added sugars, dining out too frequently, and not getting enough sleep, among others.
    Some medications and medical conditions can also lead to weight gain. There is also a genetic component to obesity.
    As with many chronic diseases, such as diabetes and cardiovascular disease, obesity is largely—if not almost entirely—preventable.
    Strategies for preventing obesity include being aware of your risk factors, being vigilant about adhering to a healthy diet, making time for daily exercise, and staying in motion throughout the day.