What should I eat for anxiety and depression?

The relationship between food and mood is bidirectional and well-documented. The gut produces approximately 90% of the body's serotonin — the neurotransmitter most associated with mood regulation and wellbeing — which means gut health and mental health are directly connected through what is now known as the gut-brain axis. An anti-inflammatory diet rich in omega-3 fatty acids, fermented foods, fiber, and polyphenols supports the microbiome conditions that favor serotonin production and reduce neuroinflammation, which is increasingly recognized as a driver of depression.

Key foods that support mood and reduce anxiety include fatty fish (salmon, sardines, mackerel), dark leafy greens, fermented foods like yogurt and kimchi, berries and other antioxidant-rich fruits, nuts and seeds, and whole grains that support steady blood sugar. Foods that consistently worsen anxiety and depression include refined sugar, ultra-processed foods, alcohol, trans fats, and high-glycemic carbohydrates that produce blood sugar spikes and crashes.

A registered dietitian specializing in mood and mental health builds a nutritional protocol around your specific symptom picture, medication, and lifestyle. Square Fare prepares meals to those exact specifications — anti-inflammatory, clean, and consistent — so the daily effort of eating in support of your mental health is removed.

What to eat to help my ADHD and focus?

ADHD and attention difficulties have a significant nutritional component that is frequently underaddressed. Research consistently shows that children and adults with ADHD have higher rates of nutritional deficiencies — particularly in iron, zinc, magnesium, omega-3 fatty acids, and vitamin D — all of which play documented roles in dopamine production, attention regulation, and executive function.

Blood sugar instability is one of the most underappreciated drivers of ADHD symptoms. When blood sugar spikes and crashes — from high-sugar foods, skipped meals, or high-glycemic diets — attention, impulse control, and emotional regulation all worsen. A protein-rich, low-glycemic diet that maintains stable blood sugar throughout the day is one of the most evidence-based nutritional interventions for ADHD symptom management.

A registered dietitian specializing in ADHD nutrition assesses your specific nutritional picture — often through targeted lab testing — and builds a protocol around both deficiency correction and blood sugar management. Square Fare prepares meals that hit consistent protein targets, avoid added sugar, and maintain the macronutrient balance that supports focus and cognitive function throughout the day.

Nutrition and eating disorders — the overlap

Eating disorders and mental health are deeply intertwined, and nutritional rehabilitation is a recognized component of eating disorder recovery that requires specialist training and a weight-inclusive, non-restrictive approach. A registered dietitian specializing in the mental health and eating disorder overlap understands that food restriction, food fear, and disordered eating patterns are often driven by underlying anxiety, OCD, trauma, or mood disorders — and that nutritional support must address both the physical and psychological dimensions simultaneously.

Nutritional adequacy is itself a mental health intervention in eating disorder recovery. Chronic under-nourishment directly affects mood, cognition, concentration, and emotional regulation — creating a cycle where the eating disorder worsens the mental health symptoms that drive it. Restoring nutritional adequacy, in a way that feels safe and manageable, is the foundation of recovery.

Square Fare works with eating disorder dietitians to provide flexible, non-restrictive meal support that follows the client's clinical framework entirely. Meals are personalized, varied, and prepared without the language of restriction or diet culture — supporting recovery without adding rules or rigidity.

The gut-brain axis: how your gut affects your mind

The gut-brain axis is one of the most important and most accessible frameworks for understanding why food affects mental health. The gut and brain are connected through the vagus nerve, a bidirectional communication pathway that allows gut conditions to directly influence brain function and vice versa. When the gut microbiome is disrupted — through poor diet, stress, antibiotics, or illness — it affects neurotransmitter production, systemic inflammation, and stress hormone regulation in ways that show up as mood changes, anxiety, brain fog, and sleep disruption.

Feeding a healthy gut microbiome means prioritizing diversity and fiber: a wide variety of plant foods, fermented foods, and prebiotic-rich ingredients like garlic, onion, leeks, asparagus, and Jerusalem artichoke. Ultra-processed foods, refined sugar, and alcohol deplete microbiome diversity. The research is clear that microbiome diversity is associated with better mental health outcomes — and that dietary change can meaningfully shift microbiome composition within weeks.

Square Fare's meals are made from scratch with whole, clean ingredients and no added sugar — a foundation that supports microbiome health by default. Every meal is personalized to each client's protocol, which means clients whose dietitian has built a specific gut-brain support plan receive exactly that, week after week.

Blood sugar and mental health: the connection most people miss

Unstable blood sugar is one of the most common and most overlooked drivers of anxiety, mood swings, irritability, and poor focus. When blood sugar drops after a spike, the body releases stress hormones — cortisol and adrenaline — to bring levels back up. These are the same hormones released during anxiety and panic. For people who are already managing anxiety or mood disorders, this blood sugar rollercoaster significantly worsens symptoms and makes emotional regulation harder.

The nutritional fix is straightforward: reduce refined carbohydrates and added sugar, prioritize protein and healthy fat with every meal, include fiber-rich vegetables that slow glucose absorption, and eat consistently rather than skipping meals. These principles are built into every Square Fare meal by default — high protein, no added sugar, whole ingredients, balanced macros.

Frequently asked questions:

Can food really affect my mental health?

Yes, significantly, and the science on this is growing rapidly. The field of nutritional psychiatry has produced compelling evidence that dietary patterns directly influence depression and anxiety risk. A landmark 2017 randomized controlled trial (the SMILES trial) published in BMC Medicine found that dietary intervention was associated with significant reductions in depression scores compared to social support alone. The gut-brain connection, blood sugar regulation, anti-inflammatory nutrition, and neurotransmitter support through diet are all evidence-based pathways through which food affects mental health.

Do I need a psychiatrist or therapist referral to work with a mental health dietitian?

No — you can self-refer to a registered dietitian. However, mental health nutrition works best as part of a coordinated care team. A dietitian specializing in mental health nutrition typically works alongside a therapist, psychiatrist, or other mental health provider — not as a replacement for mental health treatment, but as a complementary intervention that addresses the nutritional dimension of mental wellbeing.

How does Square Fare support mental health nutrition protocols?

When a mental health dietitian refers a client to Square Fare, they share the client's macro targets, dietary restrictions, and any protocol-specific requirements — anti-inflammatory ingredients, blood sugar stabilization needs, foods to include or avoid based on their specific condition. Square Fare prepares every meal to those exact specifications, made fresh from scratch each week. Clients don't have to think about whether what they're eating is supporting their mental health — it is, by design.

Is nutrition a replacement for medication or therapy?

No. Nutritional support is a complementary intervention, not a replacement for mental health treatment. Medication, therapy, and psychiatric care remain the primary evidence-based treatments for conditions like depression, anxiety, ADHD, and eating disorders. Nutrition works alongside these treatments to address the biological and physiological factors that influence mental health — and for many people, the combination produces meaningfully better outcomes than either approach alone.

Can Square Fare accommodate mental health medication interactions with food?

Some psychiatric medications have documented food interactions, most notably MAOIs, which require dietary tyramine restriction. When a referring dietitian includes medication-related dietary requirements in their client specifications, Square Fare incorporates those into the meal plan. Always work with your prescribing provider and dietitian to identify any specific dietary considerations related to your medications.

Do I need a dietitian to order from Square Fare?

No, you can start directly by taking Square Fare's quiz, which collects your health goals, dietary preferences, and any restrictions. Claire personally reviews each profile and builds your meal plan from there. Many clients start independently and later connect with a mental health dietitian in the network for deeper nutritional support.