Increased breast cancer risk in obesity linked to fat cell chemicals

Obesity increases the release of tumour-promoting molecules from fat tissue and is associated with an increased risk of breast cancer, according to a study published in Endocrine-Related Cancer. The study found that fat tissue from people with obesity released increased amounts of extracellular vesicles (EV’s) enriched in harmful and inflammatory molecules into the blood stream, which can alter breast cancer cells to become more aggressive and invasive.