NUTR 250 Lecture Notes - Lecture 15: Menopause, Glycogen, Anorexia Nervosa
Document Summary
Hunger: physiological drive to find and eat food. Satiety is the sense of fullness or satisfaction. Old school terminology is to use weight-for-height tables. New school terminology is weight and body composition. Appliesto both men and women but not children, teens, elderly, or pregnant women. Calipers are used to measure subcutaneous fat. Bioelectrical impedance: an electrical current won"t easily go through fat tissue because there"s low water content. Electrodes are placed on feet and hands. Dual energy x-ray absorptiometry (dexa): tells how much body fat and where it"s located. Seen in high alcohol intake and high glycemic load diets. Associated with heart disease, hypertension, and type 2 diabetes. Genetics play a role in 40-70% of body type, metabolic rate, and factors that affect hunger and satiety. Environment factors determine when, what, and how much we eat. Anorexia nervosa and cancer cachexia lead to wasting of body fat stores. Brain tumors, ovarian cysts, hypothyroidism, and prader-willi syndrome can lead to obesity.
