Millions of people throughout the world suffer from the effects of eating foods that trigger an adverse reaction, which we call allergy or intolerance. The symptoms can range from mild effects in specific areas such as stomach upset, throat tightening, nasal stuffiness, itchy skin and hives, to acute responses that involve multiple organ systems, which in extreme cases can result in a life-threatening anaphylactic reaction.


The Surprising Culprit!

What is most surprising to many people is to hear that food does not cause allergy or intolerance – in fact food is incapable of causing disease! Food is not like a bacterium or a virus that can cause infection; and food is not like a cancer cell that can multiply unchecked and cause havoc in the body. It is the body’s own response to the food, a component of the food, or something added to a food product during it’s manufacture, that causes disease.

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Furthermore, the symptoms experienced by one person can be quite different from those of another even though they all have eaten the same food! For example, after eating shrimp, one person may develop hives, another stomach ache and diarrhea, yet a third may have an asthma attack, and a fourth may even experience a life-threatening anaphylactic reaction. It is not the shrimp that caused the symptoms in these people, but their own body’s response to it. That is because it is the reaction of each individual person’s immune system, or their unique metabolic pathways, that determines the type of symptoms he or she will suffer as a result of food sensitivities. Of course, most people will not have any adverse effects from eating shrimps; only those allergic to shrimp will develop symptoms.


How Dr. Joneja Can Help.

The sole purpose and mandate of Vickerstaff Health Services Inc, which is owned and administered by Dr. Janice Vickerstaff Joneja, Ph.D., RD, is to provide the resources for every person who finds food a source of distress to discover the cause of their illness and the means to manage their problem. We provide services to the food allergy sufferer and to the health care professionals who counsel and care for them.


We offer:home_2

  • Information for health care professionals who are working in the field, in the form of publications, seminars and university-level courses
  • Resources for institutions and corporations such as hospitals and schools who need up-to-date information to develop policies for food allergy management
  • Individual counselling, articles, and seminars for clients who are suffering from the effects of food sensitivities



Histamine Intolerance is a little-known condition that causes its sufferers misery, with symptoms including headaches, flushing and hives. Dr. Joneja has studied Histamine Intolerance, and helped patients with the disorder, since the 1990s, and has now condensed this experience into an acclaimed new book. Find out more about this easy-to-read guide, which will help you understand if you have Histamine Intolerance, and what you can do about it.


We are here to help everyone who is suffering the physical and emotional effects of food allergies and intolerances to eat a nutritionally sound, well-balanced diet, and to attain and maintain great health and happiness in spite of their body’s adverse reactions to food.

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