Top Highlights
- Late-night snacks were linked to 20–30% higher rates of liver disease in a study of nearly 200,000 adults.
- Researchers counted eating after dinner or after bedtime as late-night eating.
- The study found an association—not proof that late eating causes liver disease—and relied on self-reported habits.
- OHSU researchers are now testing whether eating earlier can improve liver health.
A warning signal, not proof
A study tracking nearly 200,000 U.S. adults found that people who ate after dinner or bedtime had 20% to 30% higher rates of liver disease than those who did not. The conditions included fatty liver disease and cirrhosis.
That link matters, but it does not prove that late-night snacks caused liver damage. Participants reported their own eating habits, and other factors — including diabetes, weight and blood-fat levels — also affect liver health.
The liver follows a clock
The liver works in step with the body’s daily rhythms. Eating when the body prepares for sleep may make it harder to process food efficiently. Still, meal timing is only one part of a much larger picture.
Researchers now plan to test whether eating earlier can improve measures of liver health. That work could help separate a useful habit from a simple correlation.
A practical change, with limits
For people with regular schedules, finishing meals several hours before bed may prove manageable. But shift workers, caregivers and others with unpredictable days may find that difficult. The study does not justify a strict rule, nor does it replace medical advice.
If future research confirms a benefit, meal timing could offer a modest, low-cost way to support health. For now, the finding adds one more question to our growing understanding of how daily routines shape the body.
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