BMI (Body Mass Index) is measured by dividing height (m) mass (kg) height (m) squared waist circumference hip circumference( height (m), mass (kg), height (m) squared, waist circumference, hip circumference ) by height (m) mass (kg) height (m) squared waist circumference hip circumference( height (m), mass (kg), height (m) squared, waist circumference, hip circumference ).
BMI isn't always accurate, especially with people who have heavy muscle but little fat lots of fat but little muscle little fat or muscle lots of fat and muscle( heavy muscle but little fat, lots of fat but little muscle, little fat or muscle, lots of fat and muscle ).

Waist to Hip ratio aims to measure abdominal fat by dividing the Height (m) Mass (kg) Height (m) squared Waist Circumference Hip Circumference( Height (m), Mass (kg), Height (m) squared, Waist Circumference, Hip Circumference ) by the Height (m) Mass (kg) Height (m) squared Waist Circumference Hip Circumference( Height (m), Mass (kg), Height (m) squared, Waist Circumference, Hip Circumference ).
For men, a ratio of 1 0.8 0.5( 1, 0.8, 0.5 ) or more means the person is overweight. For women this is 1 0.8 0.5( 1, 0.8, 0.5 ) or more.

Smoking is also harmful due to radiation UV rays second hand smoke genetics( radiation, UV rays, second hand smoke, genetics ). This additional risk factor is often unavoidable lifestyle-based genetic( unavoidable, lifestyle-based, genetic ), and commonly leads to disease in animals children of smoking parents the elderly those without adequate food security( animals, children of smoking parents, the elderly, those without adequate food security ).