Two common health risks often discussed separately are showing up together more frequently.
A new study published in JAMA Internal Medicine found that nearly 1 in 10 U.S. adults in 2023 reported both heavy drinking and obesity. Researchers say this overlap may help explain rising rates of alcohol associated liver disease and highlights a group that could benefit from more targeted prevention efforts.
The study analyzed nationally representative data to better understand how these two risk factors intersect. While each is linked to health concerns on its own, their combination is associated with a higher risk of liver damage and related complications.
Researchers emphasize that this is not just a clinical issue but a population level pattern. The overlap appeared most often among younger and middle aged adults, particularly those without insurance or those covered by Medicaid.
The findings point to a shift in how risk factors are distributed. Rather than appearing in isolation, behaviors like heavy alcohol use and excess weight are increasingly occurring together, creating a compounding effect on health.
The study does not establish cause and effect, but it does highlight a clear association. Cross sectional research captures a snapshot in time, which means it cannot determine whether one factor leads to the other or how the relationship develops over time.
Even so, the pattern raises important questions about prevention. Efforts that focus on a single behavior may miss people who are experiencing multiple overlapping risks. Researchers suggest that more integrated approaches may be needed, especially for populations already facing barriers to care.
The results also reflect broader trends in diet and lifestyle. Alcohol intake contributes additional calories, and patterns of eating and drinking often overlap in ways that are difficult to separate in real life.
The study was supported by grants from the National Institute on Drug Abuse, the National Institute on Aging and the National Institute on Alcohol Abuse and Alcoholism. Several authors reported receiving additional research funding from federal agencies and nonprofit organizations, as well as limited consulting or editorial fees outside the submitted work.