What Is Functional Medicine

A Doctor-Led Approach to the Root Causes of Illness

Functional Medicine is a science-based, personalised model of care that looks beyond symptoms to understand why you’re unwell.


By exploring how your genetics, lifestyle, nutrition, hormones, and environment interact, we uncover the root causes of imbalance and design a clear, evidence-based plan for lasting health.

At Lantern Clinic, we combine trusted medical expertise with Functional and Integrative Medicine to bridge the gap between conventional care and whole-person wellbeing.


If you’ve been searching for answers, this approach is designed to help you move from uncertainty to clarity and from short-term fixes to long-term vitality and longevity.

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Dr Margarita Kitova-John reviewing Functional Medicine test results with a patient, representing Lantern Clinic’s collaborative, doctor-led approach to personalised healthcare.

Doctor-Led Care That Looks at the Whole Person

How Functional Medicine Practitioners Work

Functional medicine clinicians are often trained in primary or family care and use an integrative framework combining conventional diagnostics with nutrition and lifestyle medicine to identify and address root causes rather than only managing disease progression.

Longer, relationship‑based appointments enable personalised plans and measurable change.

  • Our doctors are NHS-trained and have studied with the Institute of Functional Medicine. We blend medical insight with deep system-based understanding to create truly personalised care.

  • We combine the rigour of conventional diagnostics with evidence-based nutrition, movement, sleep, and stress-management strategies.

  • We take time to listen, understand, and connect the dots, building trust and enabling detailed, individualised health plans.

A Systems Biology Approach

Your Body’s Systems Are Connected

  • Gut & Digestion

    Your gut affects nutrient absorption, hormones, and immune balance. When disrupted, it can drive inflammation and contribute to issues such as IBS, SIBO, and leaky gut.

  • Hormones & Endocrine

    Hormones are powerful messengers.
    When stress is high or the gut is out of balance, hormones can shift, leaving you feeling tired, foggy, and not quite yourself.

  • Detoxification

    Detoxification supports the removal of toxins and hormone by-products. When impaired, inflammation rises, and immunity suffers. The liver and gut play key roles in detoxification

  • Autoimmunity

    Your immune system protects you from infection and helps regulate inflammation. When imbalanced, it can contribute to autoimmune conditions, allergies, and thyroid disorders such as Hashimoto’s.

  • Metabolic Health

    Metabolic balance supports healthy weight, energy, and long-term resilience. When impaired, it can drive obesity, inflammation, and cardiovascular risk.

At the heart of Functional Medicine is a systems-based approach to health, recognising that the body’s systems are deeply interconnected.

When one area falls out of balance, it can create a ripple effect that contributes to chronic symptoms and long-term illness.

By understanding these relationships, our doctors can identify and address the root causes of complex conditions such as cardiovascular disease, type 2 diabetes, autoimmune disorders, chronic fatigue, hormonal imbalances, and many other inflammation-driven health concerns.

Rather than simply treating isolated symptoms with medication alone, we take the time to explore the full picture — including your nutrition, stress, sleep, environment, lifestyle, and genetic influences.

This is healthcare designed to support the body’s natural capacity to heal from within, restoring energy, resilience, and lasting wellbeing.

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What Makes Functional Medicine Different?

From symptom management to root‑cause care.

Functional medicine doesn’t reject conventional care, it builds upon it to help patients develop resilience and long‑term vitality.

Focus on managing symptoms

Conventional Medicine

Functional Medicine

Seeks to uncover root causes of illness

Looks at the whole person and interconnected systems

Treats organs in isolation

Medication as primary intervention

Nutrition, lifestyle, and mind-body therapies integrated with medical insight

Longer, collaborative appointments

Often 10-minute consultations

Evidence and Outcomes

Measurable Improvements That Matter

A growing body of evidence to support this approach shows that functional medicine may lead to improved outcomes and patient satisfaction. A Cleveland Clinic study demonstrated significant improvement in patients with chronic symptoms when compared with traditional care.

Study highlight: Patients treated in a functional medicine setting demonstrated significantly greater improvements in patient‑reported outcomes versus standard care.

Integrative and Functional Care at Lantern Clinic

Care That Combines Science,
Compassion and Clarity

At Lantern Clinic, we apply the Functional Medicine model with compassion, science, and precision.
Our doctors, nutritionists, and health coaches work together to uncover what’s really driving your symptoms and create a personalised plan to help you feel well again.

We support people living with fatigue, hormonal changes, digestive issues, autoimmune and metabolic disorders as well as those wanting to take a proactive approach to their long-term health.

Using advanced diagnostics and a whole-person framework, we empower you to understand your body, make meaningful changes, and maintain lasting wellbeing.

If you’re ready to move beyond short-term fixes and find clarity in your health journey, this is where it begins.

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