Integrative and Functional Medicine Services

Dr. Gannage specializes in treating chronic, difficult health conditions using a combination of nutrition and herbs, in oral and injectable form, and pharmaceuticals where required. His clinic serves patients in Markham, Toronto, the Greater Toronto Area, and across Ontario, both virtually and in person.

Integrative Medicine Services Provided:


Nutrition Counselling

Dr. Gannage has extensive experience with nutrition for chronic conditions, including autism, ADHD, autoimmune conditions, IBS and IBD, allergy, respiratory illness, diabetes, cardiovascular disease, and weight loss; and specialty diets, such as gluten-free, dairy-free, low histamine and others.

Functional Medicine

Functional medicine is a personalized approach to medicine that emphasizes identifying and addressing the root cause of disease. Dr. Gannage uses a functional medicine approach to address concerns and imbalances including (but not limited to) SIBO, dysbiosis, mitochondrial dysfunction, leaky gut, immune system dysregulation, oxidative stress, histamine intolerance, and inflammation.

Detoxification Therapies

After testing for heavy metals, chelating agents remove lead, mercury, arsenic, aluminum and cadmium, safely and effectively from the body when specific protocols are followed. Research shows chelation therapy can be beneficial and safe for patients with heart disease.

Nutrition & Herbal Supplementation

As part of your treatment plan, oral supplementation is specific to your long-term health goals, with careful consideration of drug-nutrient interactions as necessary.

Intravenous Nutrient Infusions

Infusions allow greater absorption and utilization of nutrients, especially when digestion and detoxification are impaired.

Specialty Lab Testing

In addition to basic bloodwork, specialty tests can provide valuable information regarding your hormones, heavy metal and toxin exposures, metabolism, cardiovascular health, food intolerances, digestive health and nutrient deficiencies.

Complementary Medicine for Cancer

Dr. Gannage provides adjunctive Complementary Medicine support for patients diagnosed with cancer, assisting the treatment process based on patient preference and available evidence, and in cooperation with standard Oncology recommendations.

Biomedical Treatment for Autism Spectrum Disorder

Dr. Gannage is a well known leader in the field of autism and autism management, from an integrative medicine and nutrition perspective, with emphasis on environmental factors and gut health.  He speaks nationally on the topic to health professionals and the public, and actively sees patients with ASD and ADHD daily in his Markham clinic.  He is passionate about advancing the options for care for families living with autism, leading him to research extensively and develop science-based protocols for improving patient outcomes and quality of life.

Acupuncture and Facial Rejuvenation Acupuncture

Dr. Arvind Tuteja, ND, offers Chinese medicine acupuncture services for various health conditions and concerns, as well as facial rejuvenation and cosmetic acupuncture.

Naturopathic Medicine

Dr Tuteja’s clinical naturopathic approach consists of incorporating diet and nutritional interventions, functional medicine testing and approaches, and Chinese medicine acupuncture in his treatment protocols. He combines this with natural modalities like Herbs and Homeopathy, gut healing, Laboratory Testing, Nutritional Supplements, Hydrotherapy, and Counseling in his holistic treatments tailored to individual needs.

Conditions We Treat

Conditions and concerns treated at Markham Integrative Medicine include but are not limited to the following:

Digestive issues
➢Long Haul COVID
➢ Anxiety & depression
➢ Gluten sensitivity
➢ Chronic stress
➢ Chronic Fatigue Syndrome/Fibromyalgia
Histamine intolerance
➢ Mast Cell Activation Syndrome
Autism Spectrum Disorder
➢ Cancer
➢ Diabetes
➢ Allergies
➢ Nutritional deficiencies
Autoimmune diseases
Heart disease
➢ Headaches
➢ Skin Conditions
➢ Obesity
➢ Arthritis
➢ Hormone Imbalances