The health and longevity of family members can provide clues to your own life expectancy.
Number of grandparents who lived past age 80?

	Mother	Father
Lived to at least 80.
Died before age 80.
Died of heart attack or stroke before age 50?

How many parents, siblings or grandparents have had cancer, cardiovascular disease or childhood-onset diabetes?
How many died before age 60 of these conditions?
How many died of natural causes before age 60?