Modern food systems have undergone profound changes since the 1970s, with a dramatic rise in ultra-processed foods (UPFs) coinciding with exploding rates of obesity, diabetes, and other chronic conditions. CDC data shows U.S. adult obesity prevalence more than tripled in recent decades, with childhood obesity rising from about 5% in the early 1970s to over 17% by 2010, continuing to climb thereafter. Multiple meta-analyses and umbrella reviews link high UPF consumption to over 30 adverse health conditions, including higher risks of cardiovascular disease, cancer, type 2 diabetes (15% increased risk per 10% dietary increment in some studies), metabolic syndrome, depression, and premature mortality. These products, engineered for hyper-palatability and shelf stability, often rely on additives, seed oils, high-fructose corn syrup, and industrial processing methods that disrupt metabolic function, promote inflammation, and alter gut microbiomes. Parallel to these health shifts is increasing corporate consolidation in agriculture and food manufacturing. A handful of multinational firms control major segments of seed, pesticide, processing, and retail chains, shaping both what is grown and what reaches consumers. Research highlights how food corporations have influenced nutrition science to defend UPFs, prioritizing profit margins over public health. This pattern of industrial food system dominance has been flagged by analysts as contributing to broader environmental and health externalities, including chemical overuse and reduced dietary diversity. While legacy media often treats these as isolated lifestyle issues, the synchronized timelines of dietary industrialization, corporate capture of regulatory and scientific narratives, and population-level disease spikes suggest systemic incentives that favor volume and addiction over nutrition. Long-term, these dynamics raise questions about resilience in public health and autonomy over the food supply.