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Related Concept Videos

Regulation of Food Intake01:30

Regulation of Food Intake

Short-term regulation of food intake primarily involves neural signals from the gastrointestinal (GI) tract, blood nutrient levels, and GI tract hormones. Communication between the gut and brain via vagal nerve fibers plays a significant role in evaluating the contents of the gut. Clinical studies have shown that protein ingestion produces a more prolonged response in these nerve fibers compared to an equivalent amount of glucose. Additionally, the activation of stretch receptors caused by GI...
Dietary Connections01:23

Dietary Connections

In biological systems, most metabolic pathways are interconnected. The cellular respiration processes that convert glucose to ATP—such as glycolysis, pyruvate oxidation, and the citric acid cycle—tie into those that break down other organic compounds. As a result, various foods—from apples to cheese to guacamole—end up as ATP. In addition to carbohydrates, food also contains proteins and lipids—such as cholesterol and fats. All of these organic compounds are used as energy sources to produce...
The Physiology of Taste01:24

The Physiology of Taste

The perception of a salty flavor is facilitated by sodium ions within the oral salivary fluid. Upon consumption of a salty substance, salt crystals disassemble, leading to the liberation of its constituents—Na+ and Cl- ions. These ions subsequently dissolve into the salivary fluid present in the oral cavity. The external environment of the gustatory cells experiences an elevation in Na+ concentration, thereby establishing a potent concentration gradient. This gradient propels the diffusion of...
Metabolic States of the Body: Fasting and Starvation01:24

Metabolic States of the Body: Fasting and Starvation

During the initial hours of fasting, the body uses up its glycogen stores as an energy source. Once these glycogen reserves are depleted, the body begins breaking down stored triglycerides and structural proteins. During this stage, glycerol becomes a key substrate for gluconeogenesis, while free fatty acids undergo beta-oxidation to provide energy for tissues, such as skeletal muscle. In the fasting state, the body spares protein breakdown as much as possible to conserve muscle and structural...
Compounds Essential to Human Function01:25

Compounds Essential to Human Function

The human body is composed of cells that are fundamentally made up of several different molecules. These molecules are essential to carry out all physiological processes in the body and are broadly classified into organic and inorganic based on their chemical structures.
Inorganic Compounds Essential to Human Functioning
Inorganic compounds essential to human functioning include water, salts, acids, and bases. These compounds are inorganic, i.e., they do not have a carbon-hydrogen bond. Water...
What is Monogastric Digestion?01:50

What is Monogastric Digestion?

The human body contains a monogastric digestive system. In a monogastric digestive system, the stomach only contains one chamber in which it digests food. Several other animal species also have monogastric digestive systems, including pigs, horses, dogs, and birds. This chapter, however, focuses on the human digestive system.

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Related Experiment Video

Updated: May 20, 2026

Errors as a Means of Reducing Impulsive Food Choice
07:07

Errors as a Means of Reducing Impulsive Food Choice

Published on: June 5, 2016

Food and the body politic.

Sarah Leonard

    Dissent
    |July 28, 2012
    PubMed
    Summary

    Americans are rediscovering food politics, examining issues from farm bills and deregulation to labor exploitation and school lunches. This exploration delves into the challenges and diverse left-wing responses to the current food system.

    Area of Science:

    • Food studies
    • Political science
    • Sociology

    Background:

    • A resurgence in food consciousness is evident across American media and policy discussions.
    • This trend highlights a growing public interest in the political and ethical dimensions of food choices.

    Observation:

    • The current US farm bill is described as a policy disaster, with links drawn between Reagan-era deregulation and the obesity epidemic.
    • Left-wing food movements, including organic consumption, local eating, and fair trade advocacy, face both successes and co-option.
    • Labor exploitation is a significant issue within the elite dining sector.
    • Comparisons of American and French school lunches reveal connections between food and national citizenship.
    • Vegetarianism is examined through the lens of everyday political life.

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    'Boden Food Plate': Novel Interactive Web-based Method for the Assessment of Dietary Intake
    04:46

    'Boden Food Plate': Novel Interactive Web-based Method for the Assessment of Dietary Intake

    Published on: September 18, 2018

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    Last Updated: May 20, 2026

    Errors as a Means of Reducing Impulsive Food Choice
    07:07

    Errors as a Means of Reducing Impulsive Food Choice

    Published on: June 5, 2016

    Palatable Western-style Cafeteria Diet as a Reliable Method for Modeling Diet-induced Obesity in Rodents
    09:10

    Palatable Western-style Cafeteria Diet as a Reliable Method for Modeling Diet-induced Obesity in Rodents

    Published on: November 1, 2019

    'Boden Food Plate': Novel Interactive Web-based Method for the Assessment of Dietary Intake
    04:46

    'Boden Food Plate': Novel Interactive Web-based Method for the Assessment of Dietary Intake

    Published on: September 18, 2018

    Findings:

    • Deregulation policies have contributed to the current food policy crisis and public health issues like obesity.
    • While grassroots food movements offer avenues for political engagement, they are susceptible to market co-option.
    • The food industry, particularly at the high end, relies on exploitative labor practices.
    • National food policies, exemplified by school lunch programs, play a role in shaping citizens' relationship with food and the state.
    • Individual dietary choices, such as vegetarianism, are intertwined with broader political and social contexts.

    Implications:

    • Understanding the political economy of food is crucial for addressing public health crises and promoting social justice.
    • Policy interventions are needed to reform the farm bill and mitigate the negative impacts of deregulation.
    • Ethical consumption requires critical awareness of labor practices and market dynamics within the food system.
    • Food policy can be a tool for fostering citizenship and national identity.
    • Individual food choices have broader political significance, contributing to social and environmental change.