Late-Night Eating Tied To Liver Disease Risk In U.S. Study

What Happened

A large U.S. observational study has linked late-night eating with a higher risk of two liver conditions: metabolic dysfunction-associated steatotic liver disease, known as MASLD, and cirrhosis.

The study, published in Clinical Gastroenterology and Hepatology and summarized by ScienceDaily, analyzed data from nearly 200,000 participants in the Nurses' Health Study, Nurses' Health Study II, and Health Professionals Follow-Up Study. Researchers reported that people who regularly ate after dinner or around bedtime had a 20% to 30% higher risk of liver disease compared with those who did not report that pattern.

The findings are national rather than local. No Schaumburg, Chicago-area, or Illinois-specific subgroup results were reported in the available sources. Still, the study may be relevant to readers here because the cohorts were U.S.-based and the habit under study—eating late in the evening—is common across many communities.

Why Meal Timing Is Being Studied

Diet research often focuses on what and how much people eat. This study adds to growing interest in when people eat, sometimes called chrononutrition. The idea is that eating patterns may interact with the body's daily rhythms, including sleep-wake timing and metabolism.

MASLD is a form of fatty liver disease linked with metabolic dysfunction. Cirrhosis is advanced liver scarring that can develop from several causes. The new study did not show that late eating causes either condition, but it raises questions about whether nighttime eating patterns may be a marker of broader metabolic, sleep, or lifestyle factors.

What The Evidence Shows

• Study size: nearly 200,000 participants.
• Data sources: three long-running U.S. cohorts: Nurses' Health Study, Nurses' Health Study II, and Health Professionals Follow-Up Study.
• Eating pattern studied: eating after dinner or around bedtime.
• Outcomes studied: MASLD and cirrhosis.
• Reported association: regular late-night eaters had a 20% to 30% higher risk of liver disease.
• Publication timing: the ScienceDaily summary was dated October 15, 2026, and cited the 2026 journal article with DOI 10.1016/j.cgh.2026.09.047.

Important Limits

This was an observational study. That means researchers looked for patterns in existing participant data rather than assigning people to eat at different times. Observational studies can identify associations, but they cannot prove that late-night eating directly caused liver disease.

Another limit is that eating times were self-reported. People may not always remember or record meal timing accurately. The researchers also had to consider other factors that could influence liver health, such as overall diet quality, total calorie intake, sleep, physical activity, and existing health conditions. Even with statistical adjustments, some confounding may remain.

Practical Questions For Readers

For general health conversations, readers may want to ask a doctor, registered dietitian, pharmacist, or another qualified health professional questions such as:

• Could my evening eating pattern be related to my sleep, work schedule, medications, stress, or appetite changes?
• Are there liver health risk factors in my medical history that should be reviewed?
• If I have been told I have fatty liver disease, what follow-up testing or monitoring is appropriate for me?
• How should I think about meal timing alongside overall diet quality, physical activity, sleep, and other health conditions?

Warning signs of serious liver problems can vary and may not appear early. Anyone with concerning or sudden symptoms should seek medical care promptly.

The Bottom Line

The study suggests that late-night eating may be associated with higher liver disease risk in large U.S. cohorts, but it does not prove that changing meal timing alone will prevent MASLD or cirrhosis. The finding is best viewed as a reason for more research and as a prompt for broader conversations about diet, sleep, metabolism, and liver health.

This article is for general educational purposes only and is not medical advice. Readers should talk with their doctor or another qualified provider about their own health. In an emergency, call 911.

This article is an original summary based on information published by ScienceDaily and Clinical Gastroenterology and Hepatology.

Sourcessciencedaily.com  261014015503doi.org  j.cgh.2026.09