NS 1150 Lecture Notes - Lecture 19: Gluconeogenesis, Overeating

• School: Cornell University
• Department: Nutritional Science
• Course: NS 1150
• Professor: David Levitsky

Document Summary

Intake and expenditure curves are normally distributed. The larger you are, the greater your energy expenditure. As you gain weight, you change the amount of muscle mass you have. When you lose weight, you lose muscle mass (gluconeogenesis) Metabolic rate determined by muscle mass: 25% of increase in weight is muscle. Assumes, as you gain weight, expenditure increases. 1000 calories is minimum to get nutritional requirements every day. More evidence against a biology theory of eating: small yearly energetic error does not mean there is physiological regulation, food deprivation causes overeating, overeating does not necessarily cause undereating, role of genetics, early development. Everybody ate a snack, or couldn"t eat a snack: 130 kcal during lunch if not eating breakfast. Genetics plays major role in gaining weight. 8 chance genetic contribution to weight is around 50% Early development: adipose cells remain fairly constant across a lifetime, two kinds of obesity, hypertrophic- adult onset.