Researchers have long documented that the most educated Americans were making the biggest gains in life expectancy, but now they say mortality data show that life spans for some of the least educated Americans are actually contracting. Four studies in recent years identified modest declines, but a new one that looks separately at Americans lacking a high school diploma found disturbingly sharp drops in life expectancy for whites in this group. Experts not involved in the new research said its findings were persuasive.
The reasons for the decline remain unclear, but researchers offered possible explanations, including a spike in prescription drug overdoses among young whites, higher rates of smoking among less educated white women, rising obesity, and a steady increase in the number of the least educated Americans who lack health insurance.
The steepest declines were for white women without a high school diploma, who lost five years of life between 1990 and 2008. […] The dropping life expectancies have helped weigh down the United States in international life expectancy rankings, particularly for women. […] Among developed countries, American women sank from the middle of the pack in 1970 to last place in 2010.