Does all disease really begin in the gut?
Photo by Elena Mozhvilo on Unsplash
You’ve probably heard the saying, “All disease begins in the gut.”
But what does that actually mean? And is it even true?
The concept suggests that any health challenge — whether it’s hypothyroidism, high cholesterol, eczema, depression, diabetes, or something else — can be traced back to dysfunction in the gut. While this might sound like an overstatement, there’s a lot of truth to the foundational role your gut plays in your overall health.
Let’s unpack why the gut is so important and how it influences nearly every system in your body.
The Gut’s Role in Nutrient Absorption
Your digestive system has a critical job: breaking down food and absorbing nutrients. These nutrients are the building blocks for every cell in your body, fueling daily functions and supporting vital processes.
But when your gut isn’t effectively absorbing nutrients — whether due to inflammation, imbalances, or other issues — the ripple effect can be significant:
Brain health suffers: Your brain doesn’t receive omega-3s, B vitamins, and magnesium needed for cognitive function and mental well-being.
Heart health declines: Your heart misses out on calcium, magnesium, and omega-3s, essential for maintaining a steady heartbeat.
Detox pathways struggle: Your liver lacks B vitamins and amino acids, impairing its ability to detoxify efficiently.
Thyroid function falters: Your thyroid doesn’t get the iodine and selenium it relies on for proper hormone production.
When your gut can’t deliver nutrients to your body’s systems, their ability to function optimally is compromised.
Your Microbiome: The Tiny Heroes in Your Gut
Your gut is home to trillions of bacteria that make up your microbiome — a thriving community that works in synergy with your body. These bacteria munch on leftover fiber and resistant starch from your food, producing critical compounds like:
Short-chain fatty acids that reduce inflammation
B vitamins and vitamin K2 that support energy and bone health
Neurotransmitters like serotonin and GABA that regulate mood
For your microbiome to thrive, it needs plenty of nourishment in the form of fiber (from fruits, vegetables, and whole grains) and fermented foods like yogurt, kimchi, and sauerkraut.
When your microbiome is well-fed and balanced, it supports your health in remarkable ways:
Reduces inflammation that can impact autoimmune conditions, cardiovascular health, and even skin health.
Balances hormones by metabolizing estrogen, which is critical for conditions like PCOS, estrogen dominance, and fertility.
Manages glucose metabolism, improving energy, metabolic health, and insulin resistance.
Protects against harmful pathogens, reducing immune system overactivation that contributes to autoimmune conditions.
Supports neurotransmitter production, essential for mental health and emotional resilience.
Life as we know it wouldn’t be possible without these friendly gut bugs!
So, Does All Disease Begin in the Gut?
While it may not be the only factor in every health challenge, the gut undeniably plays a foundational role in how well your body functions. If your gut isn’t absorbing nutrients properly or your microbiome isn’t thriving, it’s difficult for your body to restore balance.
That’s why the gut is such a powerful starting point on any health journey. By supporting your digestion and nurturing your microbiome, you set the stage for better health across the board.
Where to Start? Nourish Your Gut
If you’re unsure where to begin with improving your health, focusing on your gut is a great first step. Here are a few actionable tips:
Prioritize fiber from fruits, vegetables, whole grains, and legumes to feed your beneficial gut bacteria.
Include fermented foods like kefir, miso, and sauerkraut to introduce more beneficial bacteria to your microbiome.
Avoid processed foods and added sugars, which can disrupt the balance of your gut bacteria.
Stay hydrated to support digestion and nutrient absorption.
Your gut is central to your overall well-being, and small, intentional changes can have a big impact.
Food for thought 💭 how is your gut health influencing the way you feel today?
This information is for educational and informational purposes only and solely as a self-help tool for your own use. I am not providing medical, psychological, or nutrition therapy advice. You should not use this information to diagnose or treat any health problems or illnesses without consulting your own medical practitioner. Always seek the advice of your own medical practitioner and/or mental health provider about your specific health situation. For my full Disclaimer, please visit www.alisonkeiper.com/disclaimer.