In the study "Bereavement and Late-Life Depression: Grief and its Complications in the Elderly" six subjects with symptoms of complicated grief were given a dose of Paroxetine, a selective serotonin re-uptake inhibitor, and showed a 50% decrease in their symptoms within a three-month period. The Mental Health Clinical Research team theorizes that the symptoms of complicated grief in bereaved elderly are an alternative of post-traumatic stress. These symptoms were correlated with cancer, hypertension, anxiety, depression, suicidal ideation, increased smoking, and sleep impairments at around six months after spousal death.