How What You Eat Impacts Mental Health
In our modern world, mental health struggles are on the rise, from anxiety and depression to brain fog and mood swings. But what if the answer to a clearer mind and a more balanced mood isn’t found solely in therapy or supplements, but also… in your kitchen?
The emerging science of the gut-brain axis is confirming what many traditional cultures have long understood: the food we eat profoundly influences how we feel, think, and cope with life. Our gut and brain are in constant conversation, and the key to nourishing both may begin with your next meal.
What is the Gut-Brain Axis?
The gut-brain axis is the bidirectional communication system between your central nervous system (brain and spinal cord) and your enteric nervous system (the nervous system in your gut). This connection involves the vagus nerve, hormones, immune messengers, and, most fascinatingly, your gut microbiome.
Inside your digestive tract live trillions of bacteria and other microbes, which produce neurotransmitters like serotonin, dopamine, and GABA—chemicals that help regulate your mood and cognition. In fact, up to 95% of serotonin is created in the gut!
When this microbial community is diverse, balanced, and well-fed, it sends positive messages to the brain. But when it’s inflamed, imbalanced, or undernourished, it can contribute to anxiety, depression, and even cognitive decline.
Traditional Diets and Mental Well-Being
From the fermented raw milk kefir of the Caucasus to the long-simmered bone broths of rural France and the probiotic-rich laban and torshi of the Middle East, traditional cultures intuitively included gut-friendly foods in their daily diets. These ancestral practices were not only good for digestion but also crucial for emotional resilience and mental clarity.
In contrast, today’s ultra-processed, sugar-laden, soya-filled modern diet promotes dysbiosis (an imbalance of gut flora), systemic inflammation, and poor mental function.
How Food Impacts Mental Health – The Science
A growing body of research links dietary patterns to mental health outcomes. People who eat traditional, whole-food diets, rich in healthy fats, quality proteins, fermented foods, and vegetables, report fewer symptoms of anxiety and depression.
Here’s how nutrient-dense, gut-supportive foods help:
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Healthy Fats (like pastured butter, ghee, tallow, and egg yolks)
Nourish the brain and support hormone balance. The brain is about 60% fat! -
Fermented Foods (like sauerkraut, beet kvass, kefir, and laban)
Replenish beneficial bacteria and enhance gut-brain communication. -
Bone Broths and Gelatinous Cuts (like oxtail, lamb neck, chicken feet)
Rich in glycine and collagen to soothe the gut lining and support neurotransmitter function. -
Organ Meats (especially liver)
Packed with B vitamins, iron, and choline are all critical for neurological health. -
Slow-cooked legumes with proper preparation (soaked, spiced, and combined with bone broth)
When tolerated, these provide prebiotic fibres that feed beneficial microbes. -
Herbs and spices (like turmeric, cumin, mint, rosemary, and sumac)
Reduce inflammation and support digestion and mood.
A Day of Eating for Gut-Brain Harmony
Here’s a simple example of a daily menu designed to support the gut-brain axis using traditional, nutrient-dense foods:
Breakfast
• Farm-fresh eggs cooked in ghee with sautéed liver and onions
• A spoon of fermented beetroot or carrot relish
• Glass of raw milk kefir or laban with a pinch of cardamom
Lunch
• Lamb stew with bone broth base, chickpeas (soaked and rinsed), carrots, and courgette
• Side of fermented turnip or cucumber pickles
• A drizzle of olive oil and sumac over all
• Herbal tea with dried lemon balm and mint
Afternoon Snack
• Homemade chicken liver pâté with cultured butter on a slice of fermented rye sourdough
• Glass of beet kvass
Dinner
• Grilled mackerel or sardines with lemon and za’atar
• Roasted root veg in duck fat
• Small salad with raw apple cider vinegar dressing and crumbled goat cheese
Practical Tips for Cooking for Mental Health
Cook with intention – Avoid stress around meals. The gut responds to the emotional environment in which food is prepared and eaten.
Add ferments slowly – Start with 1–2 teaspoons of raw sauerkraut or a few sips of kvass per day.
Soak and sprout properly – Reduce anti-nutrients in grains and legumes to support digestibility.
Don’t fear fat – Embrace saturated animal fats; they stabilise blood sugar and support the brain.
Include broth daily – A mug of warm broth can be as calming as a cup of tea and far more nourishing.
Use herbs as food and medicine – Think of each spice as a mood-supporting ally.
Conclusion
Modern science is finally catching up to what our ancestors lived and breathed: what you eat truly shapes your mind, not just your body. If you’re struggling with low mood, anxiety, or mental fatigue, don’t underestimate the power of food prepared with love, wisdom, and tradition.
The gut-brain axis isn’t a trend, it’s a truth. And by honouring your microbiome with ancestral foods, you’re feeding not just your body, but your soul.
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Disclaimer: The content of this blog post is for informational purposes only and is not intended as medical advice. While I strive to provide accurate, well-researched, and up-to-date information, I am not a licensed medical professional. The insights shared here are based on personal research and experience. I encourage you to conduct your own research and consult a qualified healthcare provider before making any health-related decisions. Your well-being is important, and any actions taken based on the information in this blog are solely at your own discretion and risk.