Researchers have found that triple-negative breast cancer (TNBC) depends heavily on lipids—fatty acids in the body—for its growth, linking obesity to more aggressive tumor development. In preclinical mouse models, excess lipids accelerated tumor growth, while reducing lipid levels slowed it significantly. Lipids appear to act as “building blocks” that fuel rapid cancer cell proliferation.
These findings suggest new strategies for TNBC treatment, including lipid-lowering medications and dietary interventions to help slow tumor growth in patients with obesity. The study also warns that high-fat diets, such as ketogenic diets, could worsen outcomes for breast cancer patients with elevated BMI or cholesterol, potentially promoting tumor progression.
The researchers stress that further studies in human patients are needed to confirm these results. They also note that ketogenic diets may still offer benefits in other cancers, highlighting the importance of personalized nutrition and physician guidance for patients with TNBC.