A Common Late-Eating Pattern Could Be Linked to Liver Health

It’s easy for dinner to drift later in the evening after a busy day. Because the body runs on an internal clock that helps regulate sleep and metabolism, researchers are looking at how the timing of meals may matter as much as what we eat.

A large study involving nearly 200,000 adults examined whether late-night eating was connected to two liver conditions, adding another dimension to the conversation about nutrition and liver health.

What the research looked at

The analysis drew on data from three long-running U.S. studies: the Nurses' Health Study, Nurses' Health Study II, and the Health Professionals Follow-Up Study.

Researchers asked whether eating after dinner or near bedtime was associated with metabolic dysfunction-associated steatotic liver disease (MASLD) and cirrhosis.

MASLD, once referred to as fatty liver disease, is marked by excess fat in the liver along with metabolic dysfunction. Cirrhosis is a more advanced stage of scarring that can reduce the liver’s ability to work properly.

Late-night eating and liver risk

Participants who reported late-night eating had a 36% higher relative risk of MASLD and a 28% higher relative risk of cirrhosis compared with those who did not report the habit.

During follow-up, researchers documented 4,477 cases of MASLD and 312 cases of cirrhosis.

Those figures reflect relative risk, not the share of late-night eaters who went on to develop liver disease. The study also cannot prove that eating late caused either condition, only that the two were linked.

Why circadian rhythm may play a role

The body follows a daily rhythm that helps coordinate sleep, digestion, and metabolism. That rhythm can also influence how efficiently food is processed at different times of day.

Eating when the body is preparing for sleep may mean the digestive system is working at a time when metabolism is less optimized for handling food.

Researchers are still exploring whether regularly eating out of step with the body’s natural rhythms could contribute to metabolic problems over time.

Other studies have also connected night-owl habits with metabolic risk.

Scientists still need to determine exactly how meal timing may affect liver health. For now, it remains a possible contributing factor rather than a proven cause of liver disease.

What to do about meal timing

If dinner often ends up close to bedtime, there is no need to panic or impose a strict cutoff. A more consistent eating routine may be worth considering if it fits your lifestyle.

• Pay attention to your pattern: Are you eating late because you are hungry, or because the day ran long?
• Choose balanced meals: Vegetables, fiber-rich foods, and other nutritious staples support overall metabolic health.
• Think about your risk factors: If liver health is a concern, a healthcare professional can help determine whether screening or testing makes sense.

There is no need to become fixated on the clock. A routine that works for your life, along with overall good nutrition, is a practical goal.

The bottom line

Your liver may care about when you eat as well as what you eat.

Late-night eating was associated with a 36% higher relative risk of MASLD and a 28% higher relative risk of cirrhosis, although more research is needed to confirm cause and effect.

For now, a balanced diet and an eating schedule that is realistic for you are sensible places to begin.