Obesity

Overweight is defined as a BMI of 25 to 29.9 kg/m2; obesity is defined as a BMI of ≥30 kg/m2. Severe obesity is defined as a BMI ≥40 kg/m2 (or ≥35 kg/m2 in the presence of comorbidities).

The higher the body mass index (BMI), the greater the risk of morbidity and mortality

A BMI of 20 to 25 kg/m2 is associated with little or no increased risk unless waist circumference is high (a marker of increased cardiometabolic risk) or the subject has gained more than 10 kg since age 18 years. Asians and Asian Americans start to incur risk, even in this low range.

A waist circumference of ≥40 inches (102 cm) for men and ≥35 inches (88 cm) for women is considered elevated and indicative of increased cardiometabolic risk.

In Asian females, waist circumference >80 cm (31.5 inches) and in Asian males a value >90 cm (35.4 inches) are considered abnormal.

Obesity and Cancer Risk

• Colorectal cancer
• Renal Cell Ca
• Pancreas Ca
• Ca Esophagus
• Ca Endometrium and Ca Breast in Post-Menopausal women
• Ca Gallbladder

Estimating Body weight From Height

• Height is estimated in Feet and inch.

Male- Weight= 50 kg + 2.3 kg x (each inch after 5 feet)

Female - Weight = 45.5 kg + 2.3 kg x (each inch after 5 feet)

Predicted Body Weight (PBW)

The formula for men is: PBW (kg) = 50 + 2.3 (height (in) – 60) and for women is: PBW (kg) = 45.5 + 2.3 (height (in) – 60).

Management