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A liver condition tied to both moderate drinking and metabolic risk factors has increased sharply in the United States. Researchers link the rise to higher obesity levels rather than changes in alcohol consumption.
thehindu.comMetALD prevalence has more than doubled since 1990, according to research published in JAMA. U.S. adults reported both heavy drinking and a body mass index of 30 or higher in 2023.
Deaths linked to the condition have risen sharply over the past two decades. MetALD describes patients who have at least one metabolic risk factor such as obesity, type 2 diabetes or hypertension, and who also consume moderate amounts of alcohol. Moderate consumption for diagnosis is defined as 140 to 350 grams per week for women, roughly 10 or more drinks, or 210 to 420 grams per week for men, about 15 or more drinks.
U.S. alcohol consumption has remained relatively level since 2006, with only a slight increase over the past 20 years, according to National Institute on Alcohol Abuse and Alcoholism data. Obesity rates have increased since 2008 and peaked in 2022, Gallup data showed.
Dr. Samuel Klein, director of the Center for Human Nutrition at Washington University School of Medicine in Saint Louis, Missouri, said alcohol consumption and obesity are important causes of metabolic liver disease, which includes increased liver fat content, inflammation and fibrosis.
He added that the adverse effects of alcohol causing liver fibrosis are exacerbated in people with obesity who have fatty liver and obesity-related cardiometabolic diseases.
Klein stated that even small amounts of alcohol consumption increase the risk of liver fibrosis. He said people with obesity, fatty liver or obesity-related cardiometabolic diseases should not drink any alcohol at all or at least drink four or fewer standard drinks per week.
The risk of liver fibrosis increases progressively with increased alcohol intake in people who consume five or more drinks per week, he said.
Including liver disease associated with alcohol use and poor metabolic health. Federal guidance makes clear that drinking less alcohol is better for overall health and that some individuals should avoid it entirely, the spokesperson said. Dr.
Ashwani Singal, chair of the American Gastro Association Council and the CLD Foundation Alcohol-Associated Liver Disease Committee, said the increased prevalence of obesity and obesity-related cardiometabolic diseases is likely responsible for the increase observed in metabolic liver disease without an increase in alcohol consumption.
The higher the number of metabolic risk factors, the more likely and worse the liver disease, he said. Singal said he found the surge in MetALD cases concerning because of higher risks of permanent liver damage, a lack of approved liver-targeted therapies, and a lack of adequate training for gastroenterologists and hepatologists to manage alcohol use disorder.
He said hepatology training programs need to integrate education on alcohol use disorders. Dr. Rohit Loomba, director of the MASLD Research Center at the University of California at San Diego, said he was concerned about the rise in cases.
U.S. and a preventable cause for cirrhosis, he said. A 2025 study found that worldwide, steatotic liver disease, which includes ALD, MetALD and MASLD, is now the leading cause of liver transplantation.
Loomba said most people with diabetes are unaware that they are at higher risk of developing MetALD and that the condition is more prevalent among those of Hispanic ethnicity. While MetALD is a rare condition, it has a high risk of mortality, and more needs to be done about raising awareness and improving screening, he said.
Singal said the focus should be on controlling the risk factor of alcohol use.
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