Verkkoearly researchers characterized somatic and psychological symptoms and studied immune cell changes in bereaved samples. More recent research has repeatedly demonstrated increased rates of morbidity and mortality in bereaved samples, as compared to married controls, in large epidemiological studies. Verkkoover the past two decades, researchers have begun using the tools of modern neuroscience to better understand why that is and more broadly, to understand what happens to our brains and bodies during the grieving process and how best to help people mourn the death of a loved one.