How does the brain control what we eat?

How does the brain control what we eat?

“When signals from the gut to the brain reach a certain threshold during eating, we experience the feeling of satiety and a stop signal is activated which changes desire from “wanting to eat” to “wanting to stop eating”.
Analysis: research shows how the gut talks to the brain controls what, how much and when we decide to eat
By Carel le Roux, UCD

Bodyweight is a pervasive preoccupation of the modern day psyche, especially excess bodyweight or obesity. Despite strong evidence to the contrary, current dogma contends that any individual can reduce their bodyweight by deciding to eat less and by moving more.

Individuals that are unable to reduce their bodyweight are often reproached for having insufficient willpower. This perspective fails individuals and society by underplaying many factors intrinsic to the individual or symptomatic of the “obesogenic” pressures of our modern sedentary consumer society.

One element that remains almost completely obscured to public consciousness is the degree to which food intake and energy expenditure are subject to control mechanisms that lie beyond or behind the conscious decision making higher functions of the brain. Decades of research have led us to discover that there is extensive hardwiring and blood-borne mediator-based message exchange occurring between the gut and more primitive parts of the brain before, during and after eating.

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