Ingestive Behavior and Precision Nutrition: Part of the Puzzle

Area of Science:

• Nutritional Science
• Behavioral Science
• Genetics

Background:

• Individual responses to diet vary significantly, necessitating personalized nutrition strategies.
• Precision nutrition aims to translate scientific findings into practical dietary recommendations.
• Characterizing ingestive behaviors is crucial for developing effective, tailored dietary guidance.

Purpose of the Study:

• To review current knowledge on how age, sex, BMI, ethnicity, and genetics influence ingestive behaviors.
• To summarize the impact of these factors on appetite, dietary intake, sensory function, gut-brain axis, and microbiome.
• To highlight individual variability in responses to dietary interventions.

Main Methods:

• A narrative review of existing literature.
• Searches conducted using relevant search engines for ingestive behavior, genetics, and nutrition topics.
• Compilation and synthesis of evidence on influencing factors and individual variability.

Main Results:

• Age, sex, BMI, ethnicity, and genetics significantly influence ingestive behaviors.
• Complex, dynamic, and interactive relationships exist between biological and behavioral factors.
• External influences often override internal biological signals in dietary choices.
• Significant individual variability exists in responses to dietary factors.

Conclusions:

• Establishing direct cause-and-effect relationships in nutrition is challenging due to interactive influences.
• Both inherent and learned factors contribute to behavior and biology, requiring tailored approaches.
• Developing improved methods to characterize inputs to ingestive behavior is vital for advancing precision nutrition.