Most commonly used indicators of obesity are: - Body-mass index (BMI) - Waist circumference - Waist/hip ratio Though each indicator has its importance, however, comorbidities can be predicted by waist circumference. It is helpful in predicting the onset of hypertension in young adults. Reference: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3481645/ Image via: https://nationaltoday.com/world-obesity-day/