Cutting off contact or being cut off from a family member is incredibly and increasingly common in the U.S. A first-of-its-kind, large-scale national survey found that at least 27% of American adults were estranged from a parent, child, sibling, or other extended family.What causes these kinds of rifts and ruptures? Is there a path to reconciliation? When should you try to mend and when is it time to move on?