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المستخلص
Obesity is a major health problem with clearly established health implications, including an increased risk for coronary artery disease, hypertension, dyslipidemias, diabetes mellitus, gallbladder disease, degenerative joint disease, obstructive sleep apnea, socioeconomic and psychological impairment.
Obesity is clinically expressed in term of BMI or Quetelet’s index, which is derived by dividing weight by the square of height to estimate the degree of obesity. Thus, BMI = body weight (kg)/height2 (m2). Morbid obesity is a BMI more than 40 kg/m2, and super morbid obesity is BMI more than 55 kg/m2.
The risk of developing one or more of the obesity-related conditions is based on body mass index (BMI), with 25-35 kg/m2 being low risk and 40 kg/m2 being very high risk.
Obesity is a complex and multifactorial disease. Genetic predisposition may be defined with increase incidence of having obese children among obese rather than non- obese parents, environmental and developmental factors also may be contributed. Medical disorders such as Cushing’s disease or hypothyroidism may predispose to obesity, also certain drugs such as corticosteroids, antidepressants may also lead to weight gain.