Body mass index (BMI) is above 40 or higher (chronic obesity).
BMI is 35 to 39.9 (obesity), and have weight-related health problem, such as type 2 diabetes, high blood pressure or severe sleep apnea.
Gastric bypass surgery is for people willing to make permanent lifestyle changes. There is a long regular follow up with close monitoring of diet and lifestyle. Also one needs to under medical checkups ot be able to qualify for one.
Gastroesophageal reflux disease
High blood pressure
Severe sleep apnea
Type 2 diabetes
Age. Obesity can occur at any age. But as one age hormonal changes and lack of physical activity can lead to obesity.
Unhealthy diet. intake of excessive amounts of unhealthy fats, carbohydrates, processed foods etc.
Family history. if there is a family history of obesity, the risk increases.
Inactivity. leading a sedentary lifestyle and consumption of high calories leads to obesity.
Medical problems. in some cases there could be medical problems which lead to weight gain like lack of movement due to arthritis, thyroid etc.
Medications. some medications leads to weight gain like antidepressants, anti-seizure medications, diabetes medications, antipsychotic medications, steroids and beta blockers.
Pregnancy. Women find it difficult to loose post pregnancy weight.
Quitting smoking. with quitting to smoke, one 's appetite goes up which can contribute to weight gain.
Lack of sleep. lack of sleep increases the stress level and stress hormone which is directly responsible for increase in fat especially in the abdomen area.