What are some of the behavioral and physiological changes that occur in bereavement in adults?

What will be an ideal response?

Behavioral changes: crying, agitation and restlessness; preoccupation with the image of the deceased; social withdrawal; decreased concentration and attention; depressed mood; anxiety. Physiological changes: muscular weakness; sighing; sleep disturbances; immunological changes; endocrine changes, cardiovascular changes; and decreased body weight.