Does a microbial-endocrine interplay shape love-associated emotions in humans? A hypothesis

Area of Science:

• Neuroendocrinology
• Microbiome research
• Behavioral science

Background:

• The human gut microbiome is increasingly recognized for its regulatory role in the endocrine system.
• Microbial-endocrine interactions may influence complex behaviors and emotional states, including those associated with love.
• Existing psycho-endocrinological theories link specific hormones (testosterone, estradiol, serotonin, dopamine, oxytocin, vasopressin) to distinct emotional phases of love.

Purpose of the Study:

• To review the hypothesis that microbial-endocrine interactions shape love-associated emotions.
• To explore the potential mechanisms by which the gut microbiome influences neurohormonal pathways relevant to love.
• To highlight the implications of this research for understanding human connection and potential therapeutic interventions.

Main Methods:

• Review of existing literature on microbiome-endocrine interactions.
• Analysis of psycho-endocrinological theories of love.
• Synthesis of findings from animal studies and preliminary human research on microbiota, hormones, and behavior.

Main Results:

• Microbial communities may influence emotions and relationship dynamics by affecting hormonal pathways linked to love.
• Animal studies suggest microbiota impact social bonding, sexual preferences, and stress behaviors, though direct human evidence is limited.
• Microbes may modulate neurohormones such as oxytocin, dopamine, and testosterone, which are crucial for social bonding.

Conclusions:

• Microbial-endocrine interactions present a novel framework for understanding the neurobiology of love and other emotions.
• Investigating these interactions could reveal evolutionary underpinnings of microbe-emotion relationships.
• Future research should focus on elucidating the extent of microbiome influence on love and the potential for microbiome-targeted therapies to modulate emotional and social behaviors.