Ultra-processed foods and their impact on obesity and metabolic health: a narrative review
DOI:
https://doi.org/10.34119/bjhrv9n3-066Keywords:
ultra-processed foods, obesity, metabolic health, gut microbiota, dietary patternsAbstract
Ultra-processed foods (UPFs) have become a dominant component of modern dietary patterns worldwide, particularly in high-income countries. These products are characterized by high energy density, excessive amounts of added sugars, refined carbohydrates, unhealthy fats, sodium, and food additives, while providing low nutritional value. The increasing consumption of UPFs has been strongly associated with the rising prevalence of obesity and metabolic disorders. Obesity is a complex, multifactorial, and chronic disease influenced by both biological and environmental factors. Dietary patterns play a central role in its development, and growing evidence suggests that UPFs are key contributors due to their impact on appetite regulation, energy intake, and metabolic pathways. Unlike minimally processed foods, UPFs are designed to enhance palatability and convenience, often leading to overconsumption and disruption of normal satiety mechanisms. This narrative review aims to examine the relationship between UPF consumption and metabolic health, with a focus on obesity and related cardiometabolic conditions. Key mechanisms explored include impaired satiety signaling, rapid glycemic responses, insulin dysregulation, alterations in gut microbiota, and chronic low-grade inflammation. Inflammatory markers such as C-reactive protein (CRP), interleukin-6 (IL-6), and tumor necrosis factor-alpha (TNF-α) are discussed in relation to metabolic dysfunction. In addition, behavioral and environmental factors associated with UPF consumption, such as food reward pathways and eating patterns, are discussed. Evidence suggests that UPFs not only increase total caloric intake but also influence long-term dietary adherence and metabolic regulation. Understanding the impact of UPFs on metabolic health is essential for developing effective nutritional strategies and public health interventions. Addressing the role of food processing may provide a critical pathway for reducing the global burden of obesity and improving long-term health outcomes.
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