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The increase among 25- to 34-year-olds is especially troubling because the deaths are due to cirrhosis, a disease caused by excessive drinking, the authors of a new study said. The researchers suspect the economic downturn in 2008 prompted people to comfort themselves with alcohol.
"These are deaths of despair," said lead researcher Dr. Elliot Tapper, an assistant professor of gastroenterology at the University of Michigan.
It's similar to overdose deaths from the opioid epidemic. In both cases, people are trying to relieve the emotional pain they feel, Tapper said.
He cautioned, however, that because this is an observational study, it cannot prove cause and effect.
If cirrhosis is caught early, the liver will repair itself, Tapper said, and losing weight can reverse fatty liver disease.
Dr. Raymond Chung is director of the Hepatology and Liver Center at Massachusetts General Hospital, in Boston.
The deaths of very young adults are striking, added Chung, who is also on the governing board of the American Association for the Study of Liver Diseases.
"We do not yet understand why this is happening in this age group, and further study is required to determine whether this is due to sheer quantity or type of alcohol consumed, genetic factors or the presence of other forms of liver injury," Chung said.
For the study, Tapper's team reviewed death certificate data for nearly 600,000 U.S. adults.
Between 1999 and 2016, deaths from cirrhosis increased by 65 percent (from about 20,600 in 1999 to nearly 34,200 in 2016). Deaths from liver cancer doubled (from more than 5,100 to nearly 11,100) during the same time period.
Compared to women, men had nearly twice as many deaths from cirrhosis and almost four times as many from liver cancer, the study authors said.
From 2009 to 2016, people aged 25 to 34 had the highest annual increase in cirrhosis deaths -- nearly 11 percent. Deaths from liver cancer among those under 55, meanwhile, decreased, but rose among people over 55, Tapper said.
The greatest increase in deaths from cirrhosis was seen among whites, Native Americans and Hispanics, the researchers said.
Deaths from cirrhosis and liver cancer rose fastest in western and southern states. For example, deaths in Kentucky rose nearly 7 percent, in New Mexico 6 percent and in Arkansas nearly 6 percent.
Only one state, Maryland, saw a significant decrease in cirrhosis deaths, of about 1 percent, the findings showed.
According to Dr. David Bernstein, chief of hepatology at Northwell Health in Manhasset, N.Y., "This study highlights the silent epidemic of advanced liver disease in the United States, which largely remains unrecognized and unacknowledged by the collective medical leadership."
Bernstein added that "the paper should be a wake-up call to the medical community -- and especially to health care policymakers and administrators -- that we need to focus on disease prevention and risk-factor modification, while at the same time shifting resources to address the already growing burden of cirrhosis and liver cancer."
The report was published online July 18 in the BMJ.
A report from the U.S. Centers for Disease Control and Prevention released earlier this week echoed these findings.
Between 2000 and 2016, liver cancer deaths were up 43 percent for men and 40 percent for women aged 25 and older, the CDC reported.
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