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Obesity and breast cancer: exploring the nexus of chronic inflammation, metabolic dysregulation, and nutritional strategies
(Informa UK Limited, 2025-06-23)
Claudia Reytor-González
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Daniel Simancas-Racines
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Náthaly Mercedes Román-Galeano
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Martín Campuzano-Donoso
;
Angelo Michele Carella
The global prevalence of obesity has risen to epidemic proportions, posing significant health challenges across populations and contributing to increased morbidity and mortality from non-communicable diseases. Among its many consequences, obesity is now firmly established as a modifiable risk factor for breast cancer, particularly in postmenopausal women. The association between obesity and breast cancer is driven by complex and interrelated biological mechanisms, including chronic low-grade inflammation, hormonal imbalances, adipokine dysregulation, insulin resistance, and metabolic dysfunction. These factors collectively create a pro-tumorigenic environment that supports cancer initiation, progression, and recurrence. This review explores the multifaceted nexus between obesity and breast cancer, emphasizing the critical role of inflammatory, hormonal, and metabolic pathways in mediating disease risk and outcomes. Additionally, it highlights the emerging contribution of gut microbiome dysbiosis in modulating host immunity and systemic inflammation in the context of obesity. Nutritional strategies—ranging from dietary pattern modification to caloric restriction and time-restricted feeding (TRF)—are examined for their potential to reduce risk, enhance treatment efficacy, and improve survivorship in breast cancer patients.
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Navigating the weight: The impact of obesity on gastrointestinal cancer surgery and strategies for improved outcomes
(Elsevier BV, 2025-09-01)
Gerardo Sarno
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Claudia Reytor-González
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Evelyn Frias-Toral
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Martín Campuzano-Donoso
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Christos S. Katsanos
Obesity significantly affects gastrointestinal cancer surgery outcomes by creating complex challenges throughout the preoperative, intraoperative, and postoperative stages. This narrative review explores the intricate relationship between obesity and GIC surgery, highlighting the dual burden of obesity as a global public health issue and a determinant of surgical complications. The review aims to analyze physiological and technical hurdles, including limited visibility, prolonged operative times, increased perioperative risks, and adverse recovery outcomes associated with obesity. Evidence emphasizes the critical role of excess visceral fat, systemic inflammation, and insulin resistance in elevating surgical risks. Mitigation strategies involve preoperative nutritional optimization, use of advanced surgical technologies such as robotic-assisted and laparoscopic systems, and individualized postoperative care, encompassing early mobilization, tailored pain management, and close monitoring of metabolic parameters. Despite advancements, knowledge gaps remain, particularly regarding sarcopenic obesity and the long-term impact of preoperative dietary interventions. Future research should focus on refining minimally invasive techniques, integrating personalized medicine, and exploring innovative perioperative protocols to address obesity-related risks effectively. By fostering a multidisciplinary approach, this review underscores the necessity for targeted interventions to enhance outcomes and improve the quality of care for patients with obesity undergoing gastrointestinal cancer surgery.
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Mediterranean diet and breast cancer: A narrative review
(Medwave Estudios Limitada, 2025-03-04)
Claudia Reytor-González
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ZAMBRANO ESPINOSA, ANA KARINA
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Evelyn Frias-Toral
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Martín Campuzano-Donoso
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Daniel Simancas-Racines
Breast cancer is the second most common neoplasm and the deadliest among women worldwide. Its incidence varies according to human development and is associated with several risk factors, including age, genetic factors, obesity, and dietary habits. Recent research has revealed a significant influence of dietary habits on the onset and progression of this disease, which is why this review aims to comprehensively analyze the available literature to understand better the role played by the mediterranean diet in the development and management of breast cancer. The mediterranean diet has anti-inflammatory and antioxidant effects, may influence gene regulation, and produce hormonal and intestinal microbiota changes, resulting in improved quality of life for breast cancer patients by alleviating symptoms such as pain, inflammation, and reducing the risk and mortality from this disease. Evidence suggests that greater adherence to the mediterranean diet reduces the risk of breast cancer, as well as an improvement in patients' quality of life and mortality. These findings underscore its potential relevance in the context of dietary patterns associated with breast cancer prevention and management, which could inform considerations for public health policies. Further research is needed to confirm these observations and to understand the underlying mechanisms better.
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Innovation and bioethics in surgery: Redefining boundaries for a safe and human-centered future
(Medwave Estudios Limitada, 2025-03-06)
Evelyn Frias-Toral
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Alex Enrique Vásconez García
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Melannie Toral-Noristz
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Martín Campuzano-Donoso
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ZAMBRANO ESPINOSA, ANA KARINA
Since surgery is a complex procedure due to multiple factors, it is more difficult to rigorously evaluate innovative processes in this field than clinical trials of new drugs. Being able to carry out an adequate study design with all its corresponding implications, achieving high-quality standards for these studies, ensuring respect for patients' rights, and verifying that their principles of beneficence, minimization of the risk of harm, justice and autonomy are a challenge for many researchers and professionals involved in the surgical process. Hence, it is advantageous to have guides that guarantee the methodological quality of research on innovative surgical procedures and that these guides include the ethical aspects involved in each of their stages. This review aims to make a historical overview of what has been published on the ethical approach to surgical innovation. In addition, the ethical aspects of the stages of the IDEAL framework for surgical innovation will be explained.
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Preoperative Nutrition in Bariatric Surgery: A Narrative Review on Enhancing Surgical Success and Patient Outcomes
(MDPI AG, 2025-02-02)
SIMANCAS RACINES, DANIEL ALEJANDRO
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Evelyn Frias Toral
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Martín Campuzano-Donoso
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RAMOS SARMIENTO, DANIEL ALEXANDER
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Raynier Zambrano-Villacres
Bariatric surgery has become the preferred treatment for individuals with morbid obesity. Nutrition is key in optimizing surgical outcomes by reducing risks and enhancing recovery. Preoperative strategies, such as reducing body fat, decreasing liver size, and improving metabolic profiles, have been shown to facilitate safer surgical procedures with fewer complications. This narrative review aims to provide an analysis of the fundamental role of preoperative nutritional management in improving bariatric surgery outcomes, emphasizing the importance of addressing specific nutritional challenges to enhance surgical safety, recovery, and overall health. Preoperative nutritional interventions focus on correcting comorbidities and nutritional deficiencies, particularly hypovitaminosis and micronutrient imbalances, through a multidisciplinary approach involving nutritionists and other healthcare professionals. These interventions not only prepare patients for the physiological demands of surgery but also initiate a period of adaptation to new dietary habits, aiming to improve long-term compliance and mitigate risks such as postoperative weight regain and dumping syndrome. Adopting dietary changes, such as very low-calorie or ketogenic diets 6–12 weeks before surgery, enhances adherence to postoperative restrictions and overall surgical success. Future research should focus on developing comprehensive guidelines for preoperative nutritional care to improve patient outcomes globally.

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