Welcome to MK Natural Health Services

I’m Mark Kibyuk, a Naturopath practicing in St. John’s, NL.
My passion is helping people solve the root causes of their health struggles from digestive issues and food sensitivities, to hormone imbalances, allergies, and long-term fatigue.

In my practice, I use a blend of lifestyle changes, nutrition, supplements, and modern functional testing to create plans that are practical and effective.

We’re living in an exciting time for health innovation and I love translating those breakthroughs into real results for my clients.

What You Can Do Here

  • Explore my services and consultations

  • Learn about the technology and testing I use

  • Book an appointment online

  • Order professional-grade supplements through trusted suppliers

  • Stay connected with my latest blogs and social feeds

  • Invite me to deliver a workshop or lunch & learn at your workplace

📍 Location: 87 Water St., St. John’s, NL, A1C 1A5
📞 Call: (709) 743-7168

MK pic.jpg

The Four Areas I Help Most

I focus on the issues that affect my clients most: gut health, energy, mood, and hormone balance. My approach is simple: find the root cause, use testing when needed, and create a plan that actually works in real life.


Gut Health

Bloating, gas, cramping, constipation, diarrhea these aren’t just annoying symptoms, they’re signs your digestive system is struggling. When your gut isn’t working properly, it affects your energy, mood, hormones, and overall health.

I take the guesswork out of gut health. Instead of chasing quick fixes, I help you:

  • Identify the real reasons for your digestive issues (food sensitivities, microbiome imbalance, low stomach acid, inflammation).

  • Use advanced testing when needed to get clear answers.

  • Build a practical, step-by-step plan to repair your gut lining, rebalance bacteria, and restore proper digestion.

The result? Less pain, less stress around food, and more freedom to enjoy life without worrying about your belly holding you back.


No Energy

If you wake up tired, rely on caffeine to function, or crash halfway through the day, your body is telling you something. Fatigue isn’t a character flaw, it’s a sign of deeper imbalances.

I help you get to the bottom of low energy by looking at:

  • Blood sugar regulation and adrenal stress

  • Nutrient deficiencies that drain your system

  • Thyroid and hormone shifts that slow metabolism

  • Hidden gut or inflammatory triggers that sap vitality

Instead of quick fixes, I create a plan that restores lasting energy so you can think clearly, stay productive, and actually enjoy your day without running on fumes.




Hormone Imbalances

Hormones affect everything. Mood, weight, sleep, energy, and even digestion. When they’re out of balance, you feel it in every part of your life.

I help identify and correct common imbalances, including:

  • PMS, perimenopause, and menopause symptoms

  • Thyroid dysfunction and adrenal fatigue

  • Testosterone decline in men

  • Cortisol imbalances tied to chronic stress

By addressing the root cause, I create a personalized plan to bring your hormones back into balance. So your body works with you, not against you.


Mood Changes

Anxiety, low mood, and constant stress aren’t just “in your head.” They’re often linked to nutrient deficiencies, gut imbalances, and hormone shifts that change brain chemistry.

I help connect the dots by assessing:

  • Gut–brain axis issues that affect serotonin and GABA

  • Nutritional gaps that influence mood stability

  • Stress chemistry and cortisol imbalance

  • Hormone shifts that drive irritability or sadness

The goal isn’t masking symptoms it’s restoring balance so you feel calmer, more resilient, and more like yourself again.

Gut, energy, mood, hormones they’re all connected. When one is off, everything feels harder.

The good news? With the right support, they can all be brought back into balance.

Your Health Questions, Answered

Check out the latest articles on gut health, hormones, and fatigue written to help you take real action.

Feel Better with Our Most Popular Supplement Kits

At Mark Kibyuk Natural Health Services we don’t guess, we TEST.  The human body is just too complicated to guess about ailments and treatments.  Using functional labs to understand what is happening behind the symptoms is KEY to creating a plan of action which can lead to success. We pride ourselves on providing the highest level of testing available in North America to properly assess what the underlying cause of degrading health is and recommend the best clinical path forward. We only use accredited medical laboratories that focus on patient well-being, to build strong collaborative relationships with clinicians and advance the science of wellness. Please set up a consult with us to properly assess your health concerns and set up a path forward.

The tests used most at my clinic would be:

Organic Acids Test (OAT)

The Organic Acids Test is an easy at-home urine test that gives deep insight into your metabolism, gut balance, vitamin status, and energy production. It’s one of the most comprehensive ways to uncover hidden imbalances affecting mood, energy, and overall health.

Use this test if you struggle with:

  • Chronic fatigue or poor sleep

  • Mood or mental health challenges

  • Autism spectrum support needs

  • Autoimmune issues or chronic illness

  • Digestive concerns (candida, clostridia, bacteria)


Vitamin D Test

Vitamin D deficiency is common in Canada and strongly linked with heart disease, cancer risk, autoimmunity, mood issues, and low energy. This simple blood test checks your Vitamin D3 levels and helps guide the right supplementation to reach (and confirm) your optimal range.

Use this test if you:

  • Have fatigue, low mood, or anxiety

  • Struggle with frequent illness or autoimmune conditions

  • Have a family history of heart disease, stroke, or cancer

  • Want to track and optimize your Vitamin D supplementation


Gut Health Stool Tests (GI-MAP & GI Effects)

These advanced stool tests give a detailed picture of your gut microbiome. Bacteria, yeast, parasites, inflammation, digestion markers, and more. They help uncover the root causes of bloating, gas, cramping, food sensitivities, and chronic gut issues.

Use these tests if you:

  • Struggle with ongoing bloating, gas, or cramping

  • Suspect candida, parasites, or bacterial imbalance

  • Have IBS, IBD, or unexplained gut symptoms

  • Want answers after trying diets or supplements with no success

Think of these tests as the treasure map you’ve been looking for guiding you straight to the source of your gut health problems.


Endo Plus Hormone Panel

The Endo Plus Panel is a comprehensive saliva and urine test that evaluates key hormones including estrogen, progesterone, testosterone, cortisol, and DHEA. It helps identify imbalances that can affect energy, mood, weight, menstrual cycles, and long-term health.

Use this test if you:

  • Struggle with PMS, irregular cycles, or perimenopause/menopause symptoms

  • Have fatigue, sleep problems, or stress burnout

  • Notice mood swings, anxiety, or low motivation

  • Suspect low testosterone, estrogen dominance, or adrenal dysfunction

  • Want a complete picture of your hormone health before choosing treatment

If you’ve been wondering whether hormones are behind your symptoms, this panel is the roadmap to answers and balance.


Adrenocortex Stress Profile (with Cortisol Awakening Response)

This saliva-based test measures cortisol and DHEA throughout the day to assess your stress response (HPA axis). It reveals whether your adrenals are functioning normally, burned out, or overactive and how stress may be affecting your energy, mood, sleep, and metabolism.

Use this test if you:

  • Feel tired but wired, or struggle with fatigue and poor sleep

  • Have trouble handling stress or notice mood swings

  • Struggle with weight gain, blood sugar crashes, or cravings

  • Experience ongoing pain, inflammation, or frequent illness

  • Suspect adrenal burnout or cortisol imbalance

Think of this test as your stress blueprint showing exactly how your body is coping, and where it needs support to build resilience.

Online Appointment Scheduling

 
 

Let's Get Serious About Inflammation

 

I see a constant stream of patients at my clinic and issues with inflammation are almost always a concern.  Please watch our presentation on Inflammation and its effects that could be impacting your health!

 

 

Inflammation can cause a myriad of health issues in the body. Are you feeling depressed? Do you have stiff joints? Back pain? Digestive issues? Experiencing weight gain? Inflammation could be the cause. Watch our presentation on inflammation and its effects on the body.

Detox Questionnaire

IdentiT Stress Assessment

My Top Recommended Tools & Resources
Simple supports I use and trust to help you feel your best.

(Click on the links for more information)

Supports I Love

Gut & Digestion Supports

Books That Inspire Me

Guides To Support You