The Power of a Smile: How It Impacts Our Gut Health

3 min readApr 13, 2024
The Power of a Smile: How It Impacts Our Gut Health

Did you know that something as simple as a smile can have a profound impact on our gut health? It’s true! The connection between our emotions and our digestive system is strong, and cultivating positivity through smiling can lead to a happier gut. In this blog post, we’ll explore the science behind the power of a smile and its effects on our gut health.

The Gut-Brain Connection

The gut-brain axis is a bidirectional communication network between the gastrointestinal tract and the brain. This connection allows for constant communication between our emotions and our digestive system. When we experience stress, anxiety, or negative emotions, it can disrupt the balance of our gut microbiome and lead to digestive issues such as bloating, cramping, and inflammation.

Smiling and Gut Health

Smiling has been shown to have numerous benefits for our mental and emotional well-being, and these benefits extend to our gut health as well. Here’s how smiling can positively impact our digestive system:

Reduce Stress

Smiling triggers the release of endorphins, dopamine, and serotonin — neurotransmitters that promote feelings of happiness and relaxation. By reducing stress levels, smiling helps to maintain a balanced gut microbiome and prevent digestive issues caused by chronic stress.

Boost Immunity

Research has shown that positive emotions, such as those elicited by smiling, can enhance immune function. A strong immune system is essential for maintaining a healthy gut and preventing infections and inflammation.

Improve Digestion

The act of smiling can stimulate the parasympathetic nervous system, which is responsible for promoting rest and digestion. When we smile, our body enters a state of relaxation, allowing for optimal digestion and nutrient absorption.

Enhance Social Connections

Smiling is a universal sign of friendliness and approachability. When we smile, we not only improve our mood but also encourage positive interactions with others. Strong social connections have been linked to better gut health and overall well-being.

Incorporating Smiling into Your Daily Routine

Cultivating a habit of smiling regularly can have profound effects on both our mental health and our gut health. Here are some simple ways to incorporate smiling into your daily routine:

Start your day with a smile

Begin each morning by looking in the mirror and giving yourself a genuine smile. This sets a positive tone for the rest of the day.

Practice gratitude

Take a moment each day to reflect on the things you’re grateful for and let them bring a smile to your face.

Surround yourself with positivity

Spend time with loved ones, engage in activities that bring you joy, and seek out opportunities for laughter and fun.

Support your gut health

Eating foods that contain probiotics, postbiotics, polyphenols, and fiber-rich foods (R’s KOSO contains them all) supports our gut health and helps improve our mood.


The power of a smile extends far beyond just brightening someone’s day — it can also have a profound impact on our gut health and overall well-being. By cultivating positivity through smiling, we can reduce stress, boost immunity, improve digestion, and enhance our social connections — all of which contribute to a happier, healthier gut. So, let’s spread smiles and positivity wherever we go, and watch as our gut health flourishes along the way.

Let’s get started!

Written by Eriko Shintani

Certified holistic nutritionist/Holistic nutrition advisor


1. Wiswede, D., Münte, T. F., Krämer, U. M., & Rüsseler, J. (2009). Embodied emotion modulates neural signature of performance monitoring. PloS one, 4(6), e5754.

2. Martin, S. E., Kraft, C. S., Ziegler, T. R., Millson, E. C., Rishishwar, L., & Martin, G. S. (2023). The Role of Diet on the Gut Microbiome, Mood and Happiness. medRxiv : the preprint server for health sciences, 2023.03.18.23287442.




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