Marie-Claire Gahel-Calouche

Diététiste - Nutritionniste

In this section you can find information about me: my background, my training, my interests, etc. You can also find questions frequently asked by my clients.

MCGC Nutrition

About me and MCGC Nutrition

Certified professional

Member of the 'Ordre des diététistes du Québec' and of Canada. Holds a bachelor’s degree in nutrition and biology.

In-person or online consultation

Possibility to book an appointment in person or online at your preference.

Duration of choice

You can choose the duration of your consultations: 30 mins, 60 mins, 120 mins, etc.

Individualized plans

Personalized plan for each, according to nutritional objectives.

Various consultations

Weight management, sports diet, gluten, intolerances, cardiovascular disease, etc

Respect and pleasure

The core values I promote with all my clients.


I obtained my Bachelor’s degree in nutrition from McGill University and is a member of the ‘Ordre professionnel des Diététistes du Québec’ (OPDQ). I am also a member of Dietitians of Canada and a member of the SQHA (Société Québécoise de l’hypertension artérielle). My major fields of professional exercise are cardiovascular disease, hypertension, diabetes, weight management, sports nutrition and gastrointestinal intolerance including irritable bowel syndrome (IBS). In my private clinic, MCGC Nutrition, I develop individualized nutritional strategies according to the specific needs and medical history of my clients / patients. I prioritize respecting one’s dietary needs, based on sound scientific guidelines, for the of long-term healthy habits, while preserving the pleasure of eating well.

Also holding a Bachelor’s degree in Biological Sciences in Immunology and Microbiology from the Université de Montréal, I have always maintained an interest in the role of the microbiome on global health. I am constantly looking for ways to improve and update my professional knowledge. I recently completed the official training course on the application of the “Fodmap” diet for irritable bowel syndrome at Monash University in Australia, which is the founding institution of this nutritional strategy. 


Services entreprises
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As a nutritionist and dietitian, my main goal is to enable my clients to achieve not only their nutrition goals but also to surpass them. Each of us has a goal that he wants to achieve and constraints to achieve it. That’s why I take great satisfaction in seeing my clients succeed and be able to guide them during this journey. In my opinion, everyone has the opportunity to have a healthy lifestyle, it is only about wanting to put the effort to get there.

If you want to know more or make an appointment, it is possible to get a free session of 20 minutes and ask your questions directly to me.

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Frequently asked

Here are some questions often reported by different customers.

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A diet is a temporary mode of food restriction. Since a person on a diet does not learn sustainable healthy lifestyles, the results will not last over the long term. That is why the best diet is not a diet but a healthy lifestyle. However, some diets such as the DASH diet, which is a Mediterranean-type diet (which are not diets but rather healthy lifestyle models) or, alternatively, those in Canada’s Food Guide are a better starting point as they focus on long-term health.

No, there is no need to count calories. It is important to understand the concept of food quality as well as healthy portions, and these are concepts that I explain in detail during my consultations. Did you know that a closed fist represents a cup? Here is one of several examples I use to help you learn how to eat on the plate.

If you are training to get six-pack abs you will need your diet to help you achieve muscle mass. Starting with a healthy diet, like my tips to implement healthy dietary habits ( is a good place to start. You can then follow my video tips on what to eat before, during and after a training session here :