HE101 Lecture Notes - Lecture 5: Esophagus, National Eating Disorders Association, Dental Caries
Document Summary
Body mass index (bmi) relaive weight for height: weight (kg)/height (m2) Bmi is a crude measure: does not account for diferences in body composiion. Obesity: excessive body fat: associated with health risk. Waist circumference: surrogate measure of abdominal body fat. Higher increase in type 2 diabetes, cvd etc. Skinfolds: measure thickness of subcutaneous adipose issue. Can esimate % body fat using predicive equaion. Bioelectrical impedance analysis (bia: week electrical current passed through body. Muscle conducts electricity faster than fat: if lots of water was drank before, its inaccurate. Densitometry: based on body density and water/air displacement. Dual energy x-ray absorpiionetry (dxa: small x-ray beam passed over body. Measures absorpion in bone mineral and sot issue. %body fat: healthy range: woman: 12-31% Carried in lower body (pear shape: men: 6-24% United states have a higher % obesity vs canada. Boys have higher obesity rate rather than girls. Important risk factor for many chronic diseases: cvd, stroke, type 2 diabetes, cancers.
