||But why do those
four things matter? They look simple, but the first one - family history, actually hides a
wide range of important influences. If your own family tended to live long, it may be
because they were relatively more wealthy, had better housing, access to better food, or
-conversely - limited access to food detrimental to health (such as excess animal
protein), protection from environmental hazards, the opportunity for work and an adequate
income arising from this, and perhaps as a result of the others, some degree of control
over their lives.