The Body Electric
A Sickly Condition
The global rise in non-communicable diseases—particularly obesity, type 2 diabetes, metabolic syndrome, and cardiovascular disease—has drawn renewed attention to the role of dietary sugar as a primary metabolic disruptor. While historically regarded as a source of energy and pleasure, modern nutritional science increasingly characterizes sugar, especially in its refined and added forms, as a pathogenic agent when consumed chronically at high levels. Its biochemical effects extend beyond mere caloric excess; sugar fundamentally alters hormonal signaling, neurochemical reward pathways, and appetite regulation, producing a cascade of physiological changes that mirror classical models of substance dependence
Metabolic Pathways
The metabolic impact of sugar derives mainly from its constituent monosaccharides: glucose and fructose. Glucose rapidly elevates blood sugar levels, stimulating a compensatory release of insulin from pancreatic β-cells. Insulin facilitates glucose uptake in tissues but also promotes lipogenesis (fat storage) and suppresses lipolysis (fat breakdown). Chronic intake of sugar-rich foods, particularly those with high glycemic loads, leads to hyperinsulinemia and eventually insulin resistance—a hallmark of type 2 diabetes.
Fructose, metabolized primarily in the liver, bypasses key regulatory steps in glycolysis, leading to de novo lipogenesis and increased hepatic triglyceride production. Unlike glucose, fructose does not stimulate insulin or leptin—hormones critical for satiety signaling—thereby fostering overconsumption. Together, glucose and fructose form a biochemical tandem that promotes fat accumulation, appetite dysregulation, and metabolic inflexibility.
Addictive Properties
Sugar’s can influence behavior beyond its role in metabolic pathways. Emerging research in neuroendocrinology demonstrates that sugar consumption stimulates dopamine release in a brain region associated with reward and reinforcement. Repeated exposure desensitizes this system, requiring increased intake to achieve the same pleasure. This is a pattern consistent with tolerance, a core criterion of addiction.
In animal models, sugar has been shown to cause withdrawal symptoms, such as anxiety and tremors, upon removal, and to activate similar opioid pathways as drugs of abuse. Human studies, though more complex and ethically constrained, indicate overlapping neural circuits between sugar and addictive substances, particularly in individuals with compulsive eating behaviors. This has led some researchers to argue that sugar meets the neurobehavioral criteria of an addictive substance, particularly when delivered in concentrated, refined forms.
The Industrial Diet
One of the most insidious health impacts of sugar stems not from its intrinsic properties, but from its pervasiveness in the modern food system. Added sugars are present in as much as 75% of packaged foods sold in industrialized nations. This includes not only sweets and beverages, but also savory and ostensibly non-sweet items such as bread, condiments, sauces, cereals, salad dressings, and prepared meals.
The use of sugar in these products is not merely to impart sweetness, but also to act as a preservative, browning agent, texture modifier, and flavor enhancer. Its multifunctionality has rendered it indispensable to food manufacturers seeking shelf stability, mouthfeel optimization, and consumer appeal.
This widespread inclusion of sugar, often under euphemistic names like high-fructose corn syrup, evaporated cane juice, dextrose, or maltodextrin, has made voluntary avoidance exceedingly difficult. As a result, even individuals attempting to limit sugar intake may unknowingly consume well above the World Health Organization’s recommended limit of 25 grams per day.
The dominance of added sugar in the industrial food system is not an accidental byproduct of modern food production. It is the result of deliberate design decisions, driven by the imperatives of capital accumulation and consumer behavior optimization. Sugar functions not only as an ingredient but as a tool of behavioral engineering, one that reliably increases product palatability, repeat consumption, and ultimately, revenue.
Hyperpalatability
From a physiological standpoint, humans are evolutionarily hardwired to prefer sweet tastes, which historically signaled caloric density and safety. The food industry has exploited this preference by incorporating sugar into products far beyond what is necessary for flavor, nutrition, or preservation. Even small amounts of added sugar can enhance the “bliss point” of a food (the sensory profile at which it is most pleasurable) without necessarily tasting overtly sweet. This fine-tuning of sweetness, often in combination with salt and fat, creates hyperpalatable foods that override normal satiety cues and encourage overconsumption.
Unlike whole foods, which typically contain fiber, water, and other compounds that slow digestion and promote fullness, foods with added sugar are often calorically dense but nutritionally sparse, designed to be eaten quickly and in large quantities. The result is a positive feedback loop: sweetened products stimulate dopamine release, reinforce eating behavior, and fail to elicit lasting satiety thereby prompting further consumption.
Product Engineering
In the context of capitalist food production, sugar’s ability to enhance palatability at a low cost makes it a highly attractive input. It is cheap, abundant (thanks to the global regime of terror that supports the modern sugar industry), and chemically versatile. It adds mass, extends shelf life, and improves texture. But most importantly, it drives sales by increasing consumption frequency and volume.
As the food industry transitioned in the 20th century from subsistence-based production to profit-maximizing industrial agriculture and processing, the logic of the market demanded the creation of habitual and insatiable consumers. Sugar became a key agent in this process. Unlike commodities with fixed demand, sugar’s demand is elastic: the more it’s added to food, the more it is consumed, and the more revenue it generates.
Major food and beverage corporations have therefore invested heavily in sensory science, market research, and formulation technologies to optimize sugar content for maximal consumer appeal. Internal documents from soda and snack food companies have revealed deliberate strategies to target “heavy users” (individuals who consume excessive quantities of sugar-sweetened products) as a means to drive profits. The language and tactics employed parallel those used by the tobacco industry in the mid-20th century.
The Imperial Diet
While the health effects of high-sugar diets are widespread, their impact has been particularly devastating among non-Western populations whose traditional dietary patterns have been rapidly and forcibly replaced by Westernized, industrial food systems. These populations often lacked historical exposure to high-glycemic, refined sugars and thus possess no evolutionary or cultural adaptation to the metabolic stresses introduced by these diets. Among the clearest examples of this dynamic is the experience of Pacific Island communities, particularly Samoans, whose traditional foodways have been supplanted by processed, sugar-rich imports with profound consequences for public health.
Colonial Disruption
Before European contact, Samoan diets were primarily composed of root crops (taro, breadfruit, yam), fresh fish, coconut, and tropical fruits—foods that were nutrient-dense, high in fiber, and low in added sugars. The arrival of European colonial powers and missionaries in the 19th century brought not only political and cultural upheaval but also new dietary commodities: refined sugar, white flour, canned meats, and sweetened beverages. Over time, these imported goods became normalized, even valorized, as symbols of modernity and affluence—displacing indigenous food systems and reshaping local economies around dependency on imported products.
Metabolic Fallout
The health consequences of this dietary transition have been stark. Samoans today exhibit among the highest rates of obesity, type 2 diabetes, and cardiovascular disease in the world. Studies show that over 90% of adults in American Samoa are overweight or obese, and rates of diabetes exceed 40% in some demographic groups. While genetics may play a role—such as the presence of a “thrifty gene” hypothesis that posits greater energy efficiency in fat storage—the primary driver of this epidemic is nutritional colonialism: the rapid replacement of traditional diets with calorie-dense, sugar-rich processed foods.
These imported foods are not only high in sugar but often subsidized and marketed aggressively, rendering them more affordable and accessible than local produce or fish. In many Pacific Island nations, imported sugar-sweetened beverages are cheaper than bottled water, and canned goods dominate store shelves where refrigeration and agricultural infrastructure are limited. The resulting diet is one characterized by excess caloric intake and nutrient deficiency—a hallmark of what some scholars now call the “double burden of malnutrition”: simultaneous overnutrition (in the form of obesity) and undernutrition (in terms of micronutrient deficiencies).
The entrenchment of sugar-rich diets in Samoa and similar regions is not only a health crisis but a form of cultural and economic dependency. The erosion of indigenous food systems under colonial and postcolonial pressures has left many communities unable to reclaim traditional, land-based diets due to land privatization, urbanization, and global trade imbalances. Food has become a tool of dependency and extraction, echoing the logic of colonial plantation economies.
In this context, excess sugar functions not simply as a metabolic toxin, but as a vector of dispossession, reshaping bodies, identities, and economies in ways that reinforce global health inequalities. The Samoan case is emblematic of a broader pattern seen across the Global South where dietary westernization has been accompanied by escalating rates of metabolic disease and the dissolution of traditional food sovereignty.
Dreams of Sugarplums
Does the above mean that sugar is inherently evil? No. But determining our relationship to sugar, isn’t just a matter of rational individuals weighing their consumer choices. This is a collective problem. It will take a movement that addresses the root cause for the transformation of sugar from a benign and nutritious component of our diet, into a vehicle for exploitation and dependency. It won’t be easy. And perhaps, we will have to hit rock bottom before we can admit to ourselves that we really do have a concrete problem. But recovery is possible. If we think together creatively, we can get through it and build a better world.
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