Leader In Integrative Medicine

Treating chronic, difficult health conditions using a combination of nutrition and herbs, in oral and injectible form, and pharmaceuticals where required.

Meet Dr. John Gannage

Dr. John Gannage is a leader in Integrative Medicine and specializes in prevention and treatment of chronic disease using a combination of conventional and complementary medicine.

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Meet Dr. John Gannage, MD, CCFP

A leading provider of Integrative Medicine, offering health services as a licensed medical doctor to the Greater Toronto Area (GTA) and beyond since 1992.

Markham Integrative Medicine Clinic

A clinic founded by Dr. John Gannage specializing in the integration of conventional and complementary medicine, located near historic downtown Markham.

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Consult with Dr. Gannage virtually, from anywhere in the world.

What is Integrative Medicine? Dr. Gannage Explains...

Integrative Medicine is the simultaneous application of orthodox, conventional Western medicine and unorthodox complementary health practices with the sole purpose of securing improved patient outcomes.

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Scroll Through Our Library...

Dr. Gannage’s Top Tips for Weight Loss

​The internet is flooded with dietary tips, calorie-counting strategies, meal plans, low-calorie, low-fat, low-carb processed foods, fad diets, and weight loss plans. Unfortunately, these fad diets are usually not effective. More often than not, they lead to...

Long Hauler Syndrome – Part 2

If you are experiencing symptoms of Long Hauler COVID, there are a number of dietary and other measures you can take to best support yourself. These tips should help you get started on your recovery journey if you remain unwell from COVID.

Long Hauler Syndrome – Part 1

In this article, we will discuss the long-term effects of COVID-19. You will learn what long hauler syndrome is. I will offer some natural strategies to support your health and wellness if you are a long hauler.

Fundamentals of Functional Medicine: Understanding Inflammation

What causes chronic inflammation, what does it mean, and what we can do about it?

Histamine Intolerance and the Gut: A Web of Connections

Histamine intolerance and the gut are interconnected in many ways. The root cause of histamine intolerance can often be traced back to an issue or imbalance in the gut, including SIBO, dysbiosis, leaky gut, or a food sensitivity or intolerance. Similarly, histamine intolerance can contribute to and worsen gut problems, creating a vicious cycle.

The Importance of Vitamin D in Autism

Vitamin D, which is understood to be crucial for brain development, is one of the nutrients that has consistently been shown to be involved in autism.

Understanding DNA Testing for Nutrition and Lifestyle

You can’t control your genes, but you can make changes to your environment: and the more you understand about your genes, perhaps, the better equipped you are to make educated decisions when it comes to the controllable environmental factors.

How Low Stomach Acid Contributes to SIBO

SIBO can occur for a number of different reasons, and it is important to look at the whole picture when determining how to treat SIBO, beyond simply killing the bacteria. For many people, insufficient stomach acid production is a part of this picture, and a key to understanding why the overgrowth has occurred in the first place.

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