Summary:
Dietary patterns are increasingly shifting toward healthier eating, driven by greater awareness of the role of nutrition in long-term disease prevention. Many individuals aim to reduce intake of highly processed foods and added sugars while increasing consumption of whole foods. At the same time, concern is growing about exposure to dietary and environmental contaminants, such as pesticides and synthetic additives, which have been linked to metabolic, cardiovascular, neurological, and reproductive health risks. Whole foods are central to this approach, as they provide essential nutrients, fiber, and bioactive compounds that support metabolic health, gut barrier function, and antioxidant balance. Fiber and polyphenols play key roles in regulating inflammation, maintaining gut integrity, and supporting beneficial microbial activity. This study, a randomized controlled trial, evaluated a 21-day dietary purification program designed to support metabolic detoxification and overall wellbeing through whole-food intake and supplementation. Participants followed a plant-focused diet for the first 7 days, with lean proteins introduced from days 8 to 21 to ensure nutritional adequacy. Whole food-based supplements containing naturally occurring polyphenols and prebiotic fibers were included to support metabolic and gastrointestinal function. Primary outcomes assessed urinary markers of metabolic detoxification, while secondary outcomes included oxidative stress, serum biomarkers, self-reported wellbeing, and short-term changes in the gut microbiome. Participants receiving whole food supplementation showed a significant reduction in oxidative stress compared with diet alone, alongside improved markers of kidney filtration efficiency. Self-reported stress, particularly anxiety related to future uncertainty, also decreased. Gut microbiome analysis showed reductions in bacterial groups associated with metabolic and inflammatory dysfunction, with increases in bacteria linked to gut barrier integrity and short-chain fatty acid production. Overall, these findings suggest that whole food-based supplementation may support healthier dietary transitions by improving metabolic function, reducing oxidative and psychological stress, and promoting a beneficial gut microbiome profile.
Abstract:
A healthy diet helps transition individuals towards numerous long-term metabolic benefits but is challenging to maintain. Supplementation with additional whole food-based concentrates and herbs may support this shift by enhancing metabolic resilience. This randomized, controlled, crossover study evaluated a 21-day purification program emphasizing plant foods and whole food supplementation on metabolic detoxification, oxidative stress, and gut microbiota composition. Participants followed a plant-based diet for 7 days, with lean proteins introduced from days 8–21. Whole food supplements rich in polyphenols, glucosinolates, and prebiotic fibers were included to support metabolic and gastrointestinal function. The intervention group exhibited 9% (p < 0.0001) reduction in ROS-associated oxidative stress compared to diet alone, suggesting enhanced redox balance. Additionally, the intervention group exhibited higher urinary creatinine levels, indicating enhanced kidney filtration efficiency (p = 0.03). Self-reported stress levels decreased by 36% (p = 0.049) in the intervention group, with a notable reduction in anxiety related to future uncertainty, demonstrating the psychological benefits of dietary supplementation. Gut microbiome analysis revealed a reduction in Proteobacteria, a phylum associated with chronic metabolic and inflammatory diseases, and beneficial increases in Ruminococcus gnavus, Lactobacillus zeae, and Roseburia faecis, which contribute to gut barrier integrity and butyrate production. These findings highlight the potential of whole food-based supplementation to enhance dietary transitions by reducing oxidative stress, supporting kidney function, alleviating psychological stress, and modulating gut microbiota composition.
Article Publication Date: 11/08/2025
DOI: 10.3389/fnut.2025.1621709
