23 Oct 2017 --- Obesity leads to the release of cytokines into the bloodstream which impact the metabolism of breast cancer cells, making them more aggressive as a result. This is according to scientists from Helmholtz Zentrum München, Technische Universität München (TUM) and Heidelberg University Hospital, who report on their findings in Cell Metabolism. The team also reports that it has already been able to halt this mechanism with an antibody treatment.