New research out of England reveals flu shots do not work as well in older adults who have recently experienced the death of a family member or close friend. On the other hand, the shots work better for older adults who are happily married than those unmarried or especially those who are widowed. According to Stewart Neufeld, Institute of Gerontology at Wayne State University, \"It is possible that bereavement has a negative effect on the immune response due to reduced exercise and poorer eating habits. More physical exercise and better nutrition would be helpful in maintaining a more robust immune system.\"