Cooking shapes the structure and function of the gut microbiome

Area of Science:

• Microbiome research
• Nutritional science
• Human evolution

Background:

• Diet significantly influences gut microbial composition and function, often more than host genetics.
• While dietary ingredients have been extensively studied, the impact of food preparation methods like cooking on the microbiome is less understood.

Purpose of the Study:

• To investigate how cooking plant-based foods affects the gut microbiome.
• To explore the mechanisms behind these changes and their impact on host energy metabolism.
• To determine if these effects are conserved in humans.

Main Methods:

• Comparison of raw versus cooked plant diets in murine models.
• Analysis of gut microbial structure and function.
• Assessment of host energy status and metabolic changes.
• Validation of findings in human subjects.

Main Results:

• Cooking plant diets significantly reshaped the gut microbiome in mice.
• Observed changes were linked to enhanced starch digestibility and degradation of plant compounds.
• Microbiota shifts influenced host energy metabolism.
• Similar effects were detected in human participants.

Conclusions:

• The form of food, specifically whether it is raw or cooked, is a critical factor in diet-microbe interactions.
• Cooking alters the gut microbiome, affecting host energy status through improved nutrient availability.
• These findings suggest a unique evolutionary pressure on the human microbiome due to the practice of cooking.