Nutrition and Mood: What You Eat Affects How You Feel

Your gut and your brain are in constant conversation. Connected by the vagus nerve and a complex network of neurotransmitters, your digestive system influences your emotional state far more than most people realise. In fact, approximately 90% of the body's serotonin — the neurotransmitter most associated with mood regulation — is produced in the gut. **The gut microbiome and mental health** Your gut is home to trillions of bacteria, fungi, and other microorganisms collectively known as the microbiome. A diverse, balanced microbiome supports immune function, reduces inflammation, and produces the precursors to key neurotransmitters including serotonin, dopamine, and GABA. When the microbiome is disrupted — through poor diet, antibiotics, chronic stress, or illness — the effects can ripple upward into mood, cognition, and emotional regulation. **Foods that support mental wellness:** - **Fermented foods** (yoghurt, kefir, fermented vegetables) introduce beneficial bacteria - **Prebiotic fibres** (onions, garlic, leeks, bananas) feed existing beneficial bacteria - **Omega-3 fatty acids** (fatty fish, walnuts, flaxseed) reduce neuroinflammation - **Dark leafy greens** provide magnesium, critical for nervous system function - **Colourful fruits and vegetables** provide antioxidants that protect the brain **Foods to limit:** - Ultra-processed foods drive systemic inflammation - Refined sugar causes blood sugar crashes that destabilise mood - Excessive caffeine can worsen anxiety and disrupt sleep Healing through nutrition is not about rigid rules — it is about nourishing your body with the same care you would offer someone you love.