Braden would like to lose weight,but because he is obese exercise is uncomfortable for him.He begins a diet he finds in a magazine and loses a substantial amount of weight in the first two weeks.After that he is unable to lose more until he decreases his food intake;two weeks later,he must again decrease how much he eats.Worse,he is tired all the time.Why is Braden having trouble?
A) Dieting slows the metabolism,because the body responds to food deprivation with decreased energy expenditure.
B) Braden's insulin levels are dropping,so his body can no longer convert glucose into fat.
C) Braden's body is not producing enough cholecystokinin (CCK)at the same time it is exponentially increasing leptin secretion.
D) Because he is obese Braden does not have a set point,and his body is responding to his attempts to lose weight by trying to find one.

Question

Quizplus · Accepted Answer

Braden is experiencing the effects of metabolic adaptation, where the body responds to a decrease in food intake by slowing down metabolism and decreasing energy expenditure. This makes weight loss more difficult and can also cause tiredness. The initial weight loss may have been due to water weight loss or initial glycogen depletion. Braden may need to decrease his food intake further or increase his physical activity to achieve continued weight loss.

Braden Would Like to Lose Weight,but Because He Is Obese