Why Does Meal Timing Matter?

An analysis of data from nearly 200,000 people shows that eating late at night is associated with an increased risk of fatty liver disease linked to metabolic disorders and cirrhosis.

A new study on the data of nearly 200,000 people shows that eating late at night and after going to bed is associated with an increased risk of fatty liver disease associated with metabolic disorders and liver cirrhosis. Limiting caloric intake to a few hours before bed may help maintain liver health, researchers say.

Late night eating has long been associated with weight gain; But new findings suggest that eating time may also be directly related to liver health.

This research, which examined the data of about 200,000 people in three studies, shows that people who eat after dinner or after going to bed are more likely to develop fatty liver disease related to metabolic disorders or liver cirrhosis.

The results of this study have been published in the scientific journal "Clinical Gastroenterology and Hepatology".

"We know that the liver is largely in sync with the body's circadian rhythm," said lead study author Dr. Robert Willechansky of Oregon Health & Science University. "For this reason, we want to investigate whether changing the time of eating, without changing the composition of the food consumed, can help improve health."

What is the effect of eating late at night on the liver?

According to the findings of this research in the American population, people who reported eating in the late hours of the night, compared to people who did not eat during these hours, faced a 20-30% increase in the risk of developing liver diseases.

One of the diseases under investigation is "fatty liver disease associated with metabolic disorders" or MASLD; A condition in which fat accumulates in the liver and can lead to more serious damage in some people. Liver cirrhosis is also one of the serious consequences of some chronic liver diseases, which disrupts the structure and normal function of the liver by creating scar tissue.

However, not all people who develop fatty liver progress to the severe stages of the disease.

"It's important to remember that only a small percentage of people who develop fatty liver disease progress to serious stages of the disease, such as cirrhosis," Wilechanski emphasized.

He added that the main message of these findings is that limiting caloric intake to a few hours before bedtime may be beneficial for health.

According to researchers, the liver follows the circadian rhythm of the body; A biological cycle that regulates many body functions, including sleep, hormone secretion, and food metabolism.

Dr. Andrew McHale, an expert in sleep physiology and circadian rhythms at Oregon Health & Science University, said: "We've seen time and time again that the timing of various behaviors, from sleeping and eating to exercise, matters."

He explained that eating at night, when the body's biological clock is preparing for sleep, can reduce the body's ability to metabolize food effectively. In the long term, this condition may contribute to an increased risk of obesity, diabetes and now, according to new findings, liver problems.

Know the symptoms of liver diseases

There are different types of liver diseases and some of them may not cause any specific symptoms in the early stages.

Among the symptoms of liver cirrhosis, the following can be mentioned:

The presence of these symptoms does not necessarily mean liver disease, but medical evaluation is necessary if symptoms are persistent or worrisome.

Night eating and stress; Another concern for digestive health

A study earlier this year has investigated the relationship between stress and late night snacking with gut health problems.

In that study, American researchers analyzed data from more than 11,000 participants in the National Health and Nutrition Examination Survey and found a link between these factors and bowel problems.

Experts suggest that the combination of stress and eating at night can put more pressure on the health of the digestive system; However, more studies are needed to clarify the mechanism of this relationship and to determine the effectiveness of each factor.

Taken together, the new findings highlight the importance of paying attention to meal times alongside diet quality and other health-related habits. However, these results alone do not prove that late-night snacking directly causes liver disease.