Body Mass Index (Bmi) Is Associated With Overall Survival In Patients With Metastatic Non-Small Cell Lung Cancer

Obesity is related to increased mortality in several types of tumors, including endometrium, postmenopausal breast cancer and bladder. Contradictorily, for lung cancer there seems to be an inverse relationship, and patients with higher body mass index (BMI), obese or overweight, have improved survival. BMI is the ratio between the weight in kilograms and the height in meters squared and is commonly used as surrogate for body composition. Using the BMI, obesity is defined as a BMI ≥30 Kg/m2, of overweight as a BMI between 25 and 29,9 Kg/m2, normal weight as a BMI from 18,5 to 24,9 Kg/m2 and underweight below 18,5 Kg/m2.