Grief is a natural reaction to any kind of loss. Loss does not always imply death. Grief occurs when we lose something or someone that is very close to our heart and we are emotionally attached to that person, object, or life situation.
We grieve when we lose a loved human, a pet, a place of residence, a job, a loved object, or a phase of our life. For instance, a lot of people grieve the loss of youth or the loss of good health.