Breast Cancer Risk Increased By Social Isolation, Stress-Induced Obesity In Mice

Now why would she be socially isolated?

Stress from social isolation, combined with a high-fat diet, increases levels of a brain neurotransmitter - neuropeptide Y, or NPY - in mice that then promotes obesity, insulin resistance, and breast cancer risk, say researchers at Georgetown Lombardi Comprehensive Cancer Center, a part of Georgetown University Medical Center (GUMC).

I wonder.