NEUR 3403 Lecture Notes - Lecture 8: Leptin Receptor, Force-Feeding, Energy Homeostasis

• School: Carleton University
• Department: Neuroscience
• Course: NEUR 3403
• Professor: Hymie Anisman

Document Summary

Neur 3403: lecture 8 - hormonal control of stress induced feeding. Relationship between stress, cortisol, eating, and metabolic processes, these factors might contribute to the current obesity epidemic. High stress reactors (where cortisol levels rise significantly during a stress response) is associated with an increase in the number of calories consumed. Cortisol redirects the storage of fat to promote abdominal fat. Cortisol secretion is known to be elevated in obese people. Eati(cid:374)g (cid:272)o(cid:373)fort foods is thought to esse(cid:374)tiall(cid:455) refle(cid:272)t the (cid:271)rai(cid:374)"s atte(cid:373)pt at redu(cid:272)i(cid:374)g the a(cid:272)ti(cid:448)it(cid:455) of a chronic-stress response network that would otherwise promote anxiety. Glucocorticoids cause the salience of pleasurable activities to be increased. Childhood obesity is greater in households where parents report greater parenting stress. Powerful intrinsic factors function to tightly control food intake directly, or indirectly through their effects on metabolism and energy balance. Extrinsic factors such as time of day, social atmosphere, setting in which the meal is to be eaten, and of course, stress.