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Meal Duration as a Measure of Orofacial Nociceptive Responses in Rodents

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Biological Response to Meal Ingestion: Gender Differences.

Hugo Monrroy¹, Giulio Borghi², Teodora Pribic³

¹Digestive System Research Unit, University Hospital Vall d'Hebron; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (Ciberehd), Departament de Medicina, Universitat Autònoma de Barcelona, 08193 Bellaterra (Cerdanyola del Vallès), Spain. hmonrroy@gmail.com.

|March 29, 2019

Summary

Women experience more intense physical and emotional responses after eating compared to men. These gender differences in postprandial (after-meal) responses may contribute to higher rates of meal-related digestive disorders in women.

Keywords:

gender differences hedonic response homeostatic response meal ingestion metabolomic response postprandial sensations

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Area of Science:

Gastroenterology
Human Physiology
Metabolomics

Background:

Previous research indicated women tolerate lower meal loads than men.
This study hypothesized that women would exhibit a more pronounced postprandial response than men, even with identical meal loads.

Purpose of the Study:

To compare postprandial homeostatic and hedonic responses between genders after consuming a standardized meal.
To investigate gender-specific effects on vagal tone and metabolomic profiles post-meal.

Main Methods:

A randomized parallel trial involving 12 women and 12 men.
Measurement of homeostatic (hunger, satiety, fullness) and hedonic (digestive well-being, mood) sensations.
Assessment of vagal tone via heart rate variability and analysis of metabolomic profiles before and after a palatable comfort meal.

Main Results:

Meal ingestion led to increased satiety, fullness, digestive well-being, and improved mood in all participants.
Women reported a more intense sensory experience, particularly greater postprandial fullness, and tended towards stronger hedonic responses.
Women showed more pronounced effects on vagal tone and distinct lipoprotein responses compared to men.

Conclusions:

Gender significantly influences physiological and sensory responses to meal ingestion.
Observed gender differences in postprandial responses may underlie the higher prevalence of meal-related functional gastrointestinal disorders in women.