The Hunger Code: Resetting Your Body's Fat Thermostat in the Age of Ultra-Processed Food

Jason Fung

The Hunger Code: Resetting Your Body's Fat Thermostat in the Age of Ultra-Processed Food

Jason Fung
53 pages1-hour read
Nonfiction
Book
Adult
Published in 2026

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Essay Topics

Content Warning: This section of the guide includes discussion of disordered eating.

1.

Analyze the rhetorical effectiveness of Jason Fung’s three-part framework of homeostatic, hedonic, and conditioned hunger. To what extent does this structure allow him to systematically dismantle the “Calories In, Calories Out” model and build a comprehensive alternative?

2.

Fung argues that the 1977 McGovern Report inadvertently created the modern obesity crisis. How does the author use this claim to critique the relationship between government policy and public health, and what evidence does he use to support it?

3.

In what ways does Fung’s concept of the “body fat thermostat” (36) reframe the problem of obesity from a failure of personal character to a disorder of physiological regulation?

4.

Examine Fung’s comparison between the ultra-processed food industry and Big Tobacco. What specific tactics does he claim were transferred, and what is the rhetorical effect of framing food addiction in the same terms as nicotine addiction?

5.

Fung uses the success of GLP-1 agonists like Ozempic as proof of his hormonal theory, yet his primary solutions are dietary and behavioral. Analyze the potential tension between his advocacy for lifestyle changes and his use of pharmaceutical interventions as key evidence.

6.

Fung deliberately positions his work against the formula of a typical diet book. Analyze the rhetorical strategies he employs, such as his tone and use of scientific evidence, to establish his authority and distinguish The Hunger Code from that genre.

7.

How does Fung use the work of researchers like George Bray and Carlos Monteiro to build his argument? Discuss the role these figures play in lending scientific authority to his hormonal theory of obesity.

8.

Analyze the concept of the “obesogenic environment” as presented in The Hunger Code. How do factors like social modeling, portion size normalization, and food marketing create a setting where, according to Fung, weight gain becomes the default outcome?

9.

How do the three “Golden Rules of Weight Loss” function as a holistic system to address the distinct challenges posed by the three different types of hunger?

10.

Discuss Fung’s use of psychological principles, such as classical conditioning and cognitive reframing, to explain and offer solutions for the non-physiological drivers of eating. How does this integration of psychology strengthen his overall argument that hunger is a multifactorial problem?

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