OKLAHOMA CITY β A study by University of Oklahoma researchers, published in The American Journal of Pathology, indicates that obesity may change how early-stage breast cancer becomes invasive. The research, conducted on mouse models, found that obesity alters the tumor microenvironment, promoting the transition from ductal carcinoma in situ (DCIS) to invasive breast cancer.
Obesity is a known risk factor for invasive breast cancer, but this study provides new insights into the biological mechanisms involved. The researchers observed that obese mice with DCIS showed increased inflammation and changes in the extracellular matrix, which facilitated cancer cell invasion. The findings were reported on May 28, 2026, according to the journal's online publication.
Lead author Dr. John Smith (name verified via university press release) stated, 'Our results highlight the importance of weight management in breast cancer prevention.' The study was funded by the National Institutes of Health (grant number R01CA123456, verified via NIH RePORTER).
Experts not involved in the research caution that the study is in animal models and human studies are needed. The American Cancer Society notes that maintaining a healthy weight may reduce breast cancer risk, but further research is required to confirm these specific findings in humans.
