Issues We Treat

Nutritional Counselling

The connection between what you eat and how you feel is one of the most under-recognised pieces of the mental health picture. Nutritional counselling at Newmarket Therapy Centre, offered by Brendan Callaghan, integrates psychotherapy with evidence-based nutritional guidance — helping you understand how dietary patterns are shaping your mood, energy, focus, and resilience.

The Food–Mood Connection

Nutritional counselling at Newmarket Therapy Centre
Nutritional counselling at Newmarket Therapy Centre — integrated with psychotherapy, in person and online across Ontario.

The strong connection between dietary behaviour and mental health is an all-too-often overlooked piece of the puzzle that is human wellness. On the molecular level, our macronutrient (carbs, fats, proteins) and micronutrient (vitamins and minerals) consumption play a substantial role in how we think and feel. This is primarily due to the impact these compounds have on our systems of energetic and hormonal functioning, cognitive functioning, and the regulation of inflammation in the body.

Nutritional counselling at Newmarket Therapy Centre is not a diet plan, an elimination protocol, or a one-size-fits-all prescription. It is a collaborative, psychotherapeutic exploration of how your nutritional habits, your psychological experiences, and your physical experiences are all influencing each other — and what manageable adjustments might support your overall wellbeing.

Brendan Callaghan, MCP, RP(Q), holds a Master's degree in Counselling Psychology, an Honours B.A. in Psychology, and a Nutritionist Diploma. He brings both clinical depth and nutritional training to this integrated work — offered as part of his broader psychotherapy practice at Newmarket Therapy Centre.

Gut–Brain
The vagus nerve and gut microbiome directly influence mood, anxiety, and stress response through serotonin and GABA signalling
Bidirectional
Physical and psychological symptoms feed each other — addressing both produces more durable change than addressing either alone
3 g/day
of omega-3 (about a serving of salmon, a small handful of walnuts, or chia seeds) can help minimise inflammatory damage to the brain

When Nutritional Counselling May Help

Nutritional counselling can be a meaningful adjunct to psychotherapy for a wide range of presentations — particularly where the body and mind are clearly affecting each other. Common reasons people seek this work include:

Persistent low mood, fatigue, or brain fog that does not seem to lift with therapy alone
Anxiety that has a strong physical or somatic dimension
Difficulty concentrating, memory issues, or cognitive fatigue
Sleep difficulties — trouble falling asleep, staying asleep, or feeling unrefreshed
Irritable Bowel Syndrome (IBS) or other digestive issues linked with stress and mood
Hypothalamic-pituitary-adrenal (HPA) axis dysregulation — chronic stress, burnout, or adrenal fatigue patterns
A complicated relationship with food, eating, or body — without an active eating disorder
Wanting to support cognitive performance through nutrition (academic, professional, creative work)
Inflammation-related symptoms — joint pain, fatigue, mood instability
Curiosity about how your dietary patterns may be supporting or undermining your mental health

Nutritional counselling is not a replacement for medical care or for treatment of a clinical eating disorder. For severe disordered eating, we will work in collaboration with medical and dietetic specialists — please ask when you contact us.

Areas We Commonly Explore

Nutrition & Cognitive Functioning

Macronutrients and micronutrients that support thinking speed, memory, focus, and decision-making — including carotenoids, flavonols, omega-3, and B vitamins.

Inflammation & Mood

How inflammatory and anti-inflammatory dietary patterns affect depression risk, neural functioning, and physical symptoms — including the role of omega-3, curcuminoids, and trace minerals.

Gut–Brain Axis

The relationship between the gut microbiome, the vagus nerve, and mental health — including serotonin and GABA signalling, and the role of fermented foods and probiotics.

IBS & Stress

The bidirectional relationship between IBS, anxiety, and depression — and how psychotherapeutic and nutritional adjustments can interrupt the cycle.

Energy, Sleep & Mood

How caloric balance, blood sugar regulation, and macronutrient timing affect daily energy, sleep quality, and emotional stability.

Food, Identity & Behaviour

The psychological and emotional dimensions of eating — habits formed in family of origin, food as comfort or control, and building a sustainable relationship with food.

Nutritional counselling at Newmarket Therapy Centre is not about strict elimination diets or rigid prescriptions. It is about understanding how your body and mind are influencing each other — and finding manageable, individual adjustments that actually support how you want to feel.

Newmarket Therapy Centre

How the Integrated Work Unfolds

Brendan's integrated approach weaves psychotherapeutic understanding with nutritional exploration — tailored to your specific experiences, needs, and interests. The combination tends to produce more durable change than either alone.

Cognitive

Cognitive Behavioural Therapy (CBT)

CBT addresses the thoughts, beliefs, and behavioural patterns that shape your relationship with food, your body, and your overall functioning. Practical, structured tools alongside deeper exploration.

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Relational

Emotion-Focused Therapy (EFT)

For the emotional patterns underneath nutritional habits — eating as comfort, restriction as control, body image as identity. EFT helps surface and process the feelings that drive the behaviours.

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Nutrition-Focused

Nutritional Education & Exploration

Evidence-based exploration of how specific nutrients and dietary patterns may be affecting your mood, energy, cognition, and physical symptoms — translated into individually appropriate, sustainable adjustments.

Body-Based

Somatic Awareness

Building awareness of how your body actually feels in response to food, stress, and rest — and using that information to inform manageable adjustments. The body's feedback is often more useful than rigid rules.

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What to Expect

Nutritional counselling at Newmarket Therapy Centre is always tailored to the person. There are no prescribed protocols, no mandatory tracking, no rigid rules.

  • 01

    A free intake call with Susan

    Our Client Care Manager Susan will listen to what you're looking for and confirm whether Brendan's nutritional counselling work is a good fit for what you are bringing.

  • 02

    Mapping the territory

    In early sessions, Brendan takes time to understand your dietary patterns, your psychological and physical experiences, and what you are hoping to explore. This is collaborative — not a clinical assessment.

  • 03

    Exploring connections

    Together you begin to notice how your nutritional habits, psychological experiences, and physical experiences are influencing each other. Awareness comes first; adjustments come later.

  • 04

    Sustainable, individual adjustments

    Where appropriate, manageable adjustments are introduced — always grounded in your individual life, capacity, and preferences. The goal is durable change, not white-knuckle compliance.

Frequently Asked Questions

Is this a meal plan or diet program?
No. Nutritional counselling at Newmarket Therapy Centre is psychotherapeutic in nature — an exploration of how your nutritional habits, mental health, and physical wellbeing are influencing each other. Brendan does not prescribe meal plans, restrictive diets, or elimination protocols. The goal is sustainable awareness and adjustment, not rigid compliance.
Do I need an eating disorder diagnosis to come?
No. Nutritional counselling is available to anyone interested in exploring the food-mind-body connection. If you are managing an active clinical eating disorder, we will discuss whether our service is appropriate or whether a more specialised programme would better serve you — and we may work in collaboration with medical or dietetic specialists.
What credentials does Brendan hold?
Brendan Callaghan holds a Master's degree in Counselling Psychology, an Honours B.A. in Psychology, and a Nutritionist Diploma. He is a Registered Psychotherapist (Qualifying) with the College of Registered Psychotherapists of Ontario (CRPO).
Will this work for someone primarily seeking mental health support?
Yes — and that is the most common reason people come. Many find that exploring the nutritional dimension alongside the psychological one produces shifts in mood, energy, and cognition that talk therapy alone hasn't fully achieved.
Can I do nutritional counselling online?
Yes. Online sessions are available to clients anywhere in Ontario and work very well for this kind of integrated psychotherapeutic and nutritional work.
Is this covered by insurance?
Sessions with Brendan, as a Registered Psychotherapist (Qualifying), are typically covered by extended health benefit plans that cover psychotherapy services. Please check your specific plan's coverage of RP(Q) services. We provide receipts that can be submitted for reimbursement.

Ready to Take the Next Step?

Our intake team will help you understand whether nutritional counselling with Brendan is the right fit for what you are bringing. No commitment required — just a conversation.

Get Matched with a Therapist