Grief is a natural response to sorrow brought on by Loss, whether of someone or something significant in our lives. Mourning is the effect of Grief, which can bring on a host of side effects as well. The body may experience fatigue, insomnia, tension, loss of appetite, pain, anxiety and or malaise. You can grieve over the loss life, job loss, divorce, illness, relationships, etc. Grief has many dimensions from physical, emotional, behavioral, cognitive, and social. There is no allocation for how long grief lasts. Grieving may last several months or several years depending on personality, culture, coping style, health, experiences, and background.