Early dinner reduces nocturnal gastric acidity.

Area of Science:

• Gastroenterology
• Human Physiology
• Digestive Health

Background:

• Intragastric pH plays a crucial role in digestion and gastrointestinal health.
• Meal timing is a potential factor influencing digestive processes, but its specific impact on intragastric acidity requires further investigation.

Purpose of the Study:

• To investigate the differential effects of meal timing, specifically dinner, on intragastric pH levels.
• To determine if consuming dinner at different times impacts nocturnal stomach acidity.

Main Methods:

• Ambulatory 22-hour pH-metry was used to monitor intragastric acidity in 23 healthy volunteers.
• Standardized meals (breakfast, lunch) were provided, with dinner administered at either 6 pm or 9 pm in a randomized order.
• Standardized sleep and wake times were maintained throughout the study.

Main Results:

• A statistically significant higher median intragastric pH (1.67) was observed during nocturnal hours with an early dinner (6 pm) compared to a late dinner (9 pm) (1.39).
• No significant differences in intragastric pH were found during other time periods between the early and late dinner conditions.

Conclusions:

• Consuming dinner earlier in the evening can lead to increased intragastric pH during the night.
• Early dinner timing may be a beneficial dietary strategy for individuals or conditions where maintaining lower intragastric acidity is desirable.