A new long-term analysis reveals that eating late at night is associated with a 20 percent to 36 percent higher risk of developing fatty liver disease and cirrhosis. Published in the journal Clinical Gastroenterology and Hepatology, the study examined data from nearly 200,000 participants across three studies.
Oregon Health and Science University Links Late-Night Eating to Liver Disease
Researchers have documented a clear correlation between eating after dinner or after bedtime and an elevated risk of serious hepatic conditions, including metabolic dysfunction-associated steatotic liver disease and cirrhosis, according to the OHSU News research report.
The analysis drew upon diet and lifestyle habits self-reported by nearly 200,000 participants across three studies.
Other accounts tracking the US population figures published by The Independent noted a consistent 20 percent to 30 percent increase in all forms of liver disease among late-night eaters compared with those who abstained from evening snacking.
Circadian Rhythms Limit Liver Metabolism at Night
The liver possesses its own peripheral biological clock that coordinates nutrient processing and storage, functioning in tandem with circadian rhythms.
“We know the liver is very much in tune with the body’s circadian rhythms. So we’re interested in changing the timing of eating in a way that could make a difference in health without changing the composition of what people eat.”
Dr. Robert Wilechansky, Oregon Health and Science University
Eating when the internal biological clock is actively promoting sleep reduces the body’s metabolic efficiency. Insulin sensitivity decreases during the night hours.
“We are seeing over and over again that the timing of behaviors, whether it’s sleep, eating or exercise, really matters. For example, we have shown that eating during the night, when the internal biological clock is promoting sleep, reduces the ability of your body to metabolize foods as efficiently and can eventually lead to obesity, diabetes and now poor liver health.”
Dr. Andrew McHill, sleep and circadian physiologist at Oregon Health and Science University
Study Authors Note Limitations in Observational Data
Study authors emphasize that the analysis remains observational despite tracking healthy participants over roughly 16 years.
Reliance on self-reported dietary habits presents challenges, particularly because conditions like metabolic dysfunction-associated steatotic liver disease frequently manifest without noticeable symptoms in early stages.
Oregon Health and Science University Recruits for Clinical Trials
Investigators at Oregon Health and Science University are actively recruiting for a new study to move beyond observational findings. This upcoming study will directly monitor participant eating behaviors to determine whether eating earlier improves liver health.
Investigators stress that individuals who already live with cirrhosis should consult healthcare providers before altering evening eating habits, as clinicians sometimes recommend a late-evening snack to prevent prolonged fasting.