How might responses to physical changes in middle adulthood carry over into relations with family and friends?

Consider the various physical and cognitive milestones of middle adulthood. Think of as many examples as you can of physical and cognitive changes that may influence and contribute to relationships with adult children, aging parents, siblings, and friends.

For example, how might responses to physical changes in middle adulthood carry over into relations with family and friends? How might hardiness influence one’s relationships at midlife? What characteristics of a Type A behavior pattern might negatively impact one’s relationships at midlife?