The holidays are known for slowing down, celebrating with loved ones and friends, and feasting around tables. Every holiday gathering I have ever been to has always included food. Lots of food. And while we all have to eat to live, often we stretch our normal boundaries past the healthy options and indulge in special treats unlike any other time of the year. This can greatly disrupt our gut-brain connection. With the start of the New Year, you may want to improve your diet and use functional nutrition strategies to get your health back on track.
The gut-brain connection refers to the bidirectional communication network linking the gastrointestinal (GI) system and the central nervous system (CNS). This relationship is so powerful! It influences digestion, immunity, hormonal balance, stress response, mood, cognition, and overall well-being. In recent years, the gut-brain axis has become one of the most important areas of holistic and functional health due to mounting evidence that the gut microbiome plays a regulatory role in mental and neurological health. Functional nutrition, which focuses on personalized dietary strategies to restore optimal physiological function, is a natural extension of this research.
The gut and brain communicate through several pathways. The most studied pathway is the vagus nerve, a major component of the parasympathetic nervous system. The vagus nerve transmits signals from the brain to the digestive tract and, just as important, it transfers signals from the gut back to the brain. This feedback loop helps regulate inflammation, appetite, stress hormones, and even emotional states.
Another major communication channel is through neurotransmitters. The gut contains the enteric nervous system (ENS), which is often called the “second brain.” It produces more than 30 neurotransmitters, including approximately 90% of the body’s serotonin, which plays key roles in mood, sleep, appetite, and anxiety regulation. Gut bacteria can stimulate or inhibit the production of neurotransmitters. If there is an improper imbalance it can lead to dysbiosis (an imbalance of gut microbes) which can contribute to mood disorders.
The gut also influences the brain through the immune system. Roughly 70% of immune cells reside in the gut. When the gut lining becomes compromised – often called “intestinal permeability” or “leaky gut” – the body’s immune activation increases. Chronic, low-grade inflammation has been associated with depression, anxiety, cognitive decline, chronic disease, autoimmune diseases, and neurodegenerative diseases.
The human microbiome is a diverse ecosystem of bacteria, viruses, and fungi. A balanced microbiome supports digestion, nutrient absorption, immune function, and metabolic processes. Research shows that individuals with anxiety, depression, irritable bowel syndrome (IBS), and inflammatory bowel disease (IBD) often present with altered microbial profiles.
Using functional nutrition as an approach to improve gut-brain function can be very beneficial. Functional nutrition focuses on identifying root causes rather than simply reducing symptoms. For gut-brain health, nutritionists examine patterns such as food intolerances, stress, antibiotic history, sleep, and blood sugar balance.
Here are five key strategies to improving gut-brain health using targeted functional nutrition:
- Eat foods that are designed to help grow good gut bacteria. These would be known as foods high in prebiotics and fiber that nourishes good bacteria. This would include: garlic, onions, leeks, asparagus, apples, bananas, oats, and legumes. Prebiotics support short-chain fatty acid (SCFA) production, which helps reduce inflammation and strengthen the gut barrier.
- Eating fermented food and probiotics can also aid in growing good gut bacteria. Adding fermented food to your diet like yogurt, kefir, sauerkraut, kimchi, miso, and kombucha contain naturally occurring probiotics that contribute to microbial diversity. In some cases, targeted probiotic supplements are used to restore balance.
- Inflammation can wreck your gut-brain health. Eating low inflammatory foods can help to reduce gut inflammation. A good mediterranean diet can help lower gut inflammation. If your diet consists of processed foods, refined sugar, artificial sweeteners, excessive alcohol, and trans fats it can disrupt the microbiome and increase inflammation. Functional nutrition emphasizes whole, minimally processed foods to support gut integrity.
- Having a stable blood sugar is another key component to good gut-brain health. Blood sugar spikes and crashes affect stress hormones, mood, and inflammation. A balanced combination of protein, fat, and fiber at meals helps stabilize energy and reduce anxiety-like symptoms linked to glucose imbalance.
- Addressing nutrient deficiencies can also aid in improving gut-brain health. Nutrients such as magnesium, omega-3 fatty acids, B vitamins, zinc, and vitamin D are essential for both neurological and gut function. Deficiencies can worsen anxiety, depression, digestive issues, and immune stress.
Your diet and digestive health are pivotal in helping improve the gut-brain bidirectional superhighway that controls so many aspects of your mood, your stress levels, your body inflammation, and impacts chronic diseases. The gut-brain connection along with your digestive health also has a profound influence on mental and emotional well-being. Functional nutrition provides a powerful, individualized framework for restoring balance through dietary and lifestyle interventions. By supporting the microbiome naturally in your gut, reducing inflammation, and nourishing the nervous system, functional nutrition helps create the conditions necessary for both gut and brain to thrive and work seamlessly together resulting in better overall health.
-by Dr. Brandon Crouch, D.C.
About the Author: Dr. Brandon Crouch is a Chiropractor with Crouch Family Chiropractic (www.crouchfamilychiro.com). Although his primary care is the spinal adjustment, Dr. Crouch also uses a cutting-edge natural protocol specifically for those suffering with peripheral neuropathy. If you have questions or comments Dr. Crouch can be reached at 270-842-1955 or via email at: office@crouchfamilychiro.hush.com.
Disclaimer: The information in this article is not intended to replace a one-on-one relationship with a qualified health care professional and is not intended as medical advice. The information is meant for educational and informational purposes only. The information provided is not meant to diagnose, treat, or cure any disease or condition. Please consult your healthcare professional before changing or starting any new exercise routine, dietary, vitamin, or mineral supplement.
Sources:
- Cryan, J. F., & Dinan, T. G. (2012). Mind‐altering microorganisms: The impact of the gut microbiota on brain and behaviour. Nature Reviews Neuroscience.
- Mayer, E. A. (2011). Gut feelings: the emerging biology of gut-brain communication. Nature Reviews Neuroscience.
- Foster, J. A., & Neufeld, K. A. (2013). Gut-brain axis: how the microbiome influences anxiety and depression. Trends in Neurosciences.
- Cani, P. D. (2017). Gut microbiota and immune response. Nature Reviews Immunology.
- Sudo, N. (2014). Microbiome, HPA axis, and stress. Psychoneuroendocrinology.
- Gibson, G. R., et al. (2017). Prebiotics: concept, definition, and health benefits. Food Science & Technology Bulletin: Functional Foods.
