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Fast Food Weight Loss - Is Eating At McDonald's The New Path To Weight Loss?
Is eating at McDonald's the new path to weight loss? Can fast food burgers, fries and sodas fit into your diet and weight loss program? For years, the answer has been a resounding NO. But lately, Wendy's, Burger King and many other fast food chains have ...
Food Retailing or Food Entertainment?
Food retailing is going through a global revolution. On one side of the equation companies such as Walmart, Aldi and Liedl are gaining market share as local commodity food retailers. Where does this leave the independent food retailer and does he have a ...
The Cheapest Way To Stop Eating Junk Food And Start Finding Your Ideal Weight Again
Your health is your responsability. As a human being, you have the choice to put in your stomach whatever you want. It is YOU and only you that can choose what you want or not to eat. In other words, it is YOU who chooses to be slim and fit or not. That ...
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Allergic food reactions should be confined to those cases where an immune mechanism can be demonstrated. Most instances of food intolerance are not explained by a clear immunological mechanism, being caused by toxics (spices, sulphites) and pharmacological (caffeine, sodium nitrite) stimuli or by enzymatic deficiencies (lactose deficiency in some cases of milk intolerance). In these non-immune food reactions, however, many of the manifestations may be accounted for by activation of the alternative complement pathway. It is postulated that this pathway is triggered by non-immune stimuli such as food contaminants, leading to formation of anaphylotoxins such as C5a.
In the first year of life, food intolerance is relatively common, with cow's milk being the most frequent initiating stimulus. It appears as gastrointestinal symptoms and possibly wheezing. In adults the foods most frequently involved in intolerance are milk, eggs, fish, nuts, wheat and chocolate. These food reactions frequently have an allergic pathogenesis. Symptoms include urticaria, angioedema, asthma, anaphylaxis and less frequently, nausea and vomiting. Such manifestations, but even more those comprising the oral allergy syndrome-swelling of the lips within minutes of food ingestions and tingling in the mouth and the throat-closely correlate with the presence of specific IgE and implicate a type I hypersensitivity as the mechanism responsible for the clinical manifestations.
Involvement of type I hypersensitivity can be documented by the detection of specific IgE using the RAST or, less expensively, with a skin prick test. The prick test, unfortunately, is only as good as the antigen it uses. Therefore, while antigenic preparations from eggs, milk or shellfish may provoke a positive skin reaction in sensitized individuals, highly purified preparations from apple are rarely do, even if a hypersensitive subject gives strikingly positive reactions when challenged with cruder preparations from apple juice or apple peel. The main diagnostic procedure in food intolerance is an elimination diet from which suspect foods are gradually removed until symptoms disappear. A positive diagnosis is made when symptoms reappear upon reintroducing a specific food. This challenge should be done in a double-blind manner using placebo controls. The challenge should be avoided, however, if the food is suspected to have caused systemic anaphylaxis in the past.
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