In America, income inequality has been increasing for decades and is connected to all kinds of other inequalities, from discrepancies in access to health care to the fact that rich people have shorter commutes to work. The overall effect of money is so significant that people with high incomes can expect to live ten to fifteen years longer than people with low incomes. The men in the Harvard Study are no different; on average, the college men had significantly higher incomes than the Boston inner-city men, and lived 9.1 years longer.
