Some allergies are widely thought to be outgrown. Usually kids will outgrow egg and milk allergies but do not outgrow nut allergies. A recent couple of studies by John Hopkins.

The prognosis for a child with a milk or egg allergy appears to be worse than it was two decades ago, said Robert A. Wood, M.D., a co-author of both studies, and colleagues. Rather than outgrowing the allergies by the time they start school, only about 20% to 40% of children do so with milk and about 4% to 26% with egg. Twenty percent of patients with milk allergies and 30% of those with egg allergies don’t develop tolerance till age 16, found the researchers.

“We may be dealing with a different kind of disease process than we did 20 years ago,” Dr. Wood said. “Why this is happening we just don’t know.” Read the rest of this entry »

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Tags: allergic rhinitis, allergies, allergy, Asthma, atopic dermatitis, co-author, counseling, eczema, egg allergies, egg allergy, food allergies, food allergy, infants and young children, john hopkins, milk allergies, milk allergy, nut allergies, pediatric allergy, Robert A. Wood

A food allergy is a reaction by the body’s immune system. When a person is sensitive to a food, such as peanuts, the immune system overreacts when the person comes in contact with that food. True food allergies are quite rare, affecting only about 1 % of adults and about 5% of children.

Many people think they have a food allergy, but what they really have is a food intolerance, which is a problem in the digestive tract and does not involve the immune system. In someone with a food intolerance, either the food irritates the digestive tract or the body is unable to digest that food properly.

While the symptoms of food allergies and food intolerances are often similar, there are important differences between them as well. Eating even a tiny amount of a food can trigger an allergic reaction, and the reaction will happen every time the person eats that food. On the other hand, a food intolerance may not cause a reaction unless a large amount of the food is consumed. For example, in someone with lactose intolerance drinking a cup of coffee with a small amount of milk in it may not cause a problem, but that same person might become sick after drinking a whole glass of milk.
The foods that most commonly trigger allergies are:
� cow’s milk
� eggs
� fish (such as bass, cod, and flounder)
� shellfish (such as crab, lobster, shrimp)
� peanuts
� tree nuts (such as almonds, cashews, hazelnuts, pecans, and walnuts)
� wheat
� soy

Symptoms
Food allergy symptoms usually develop within an hour of eating the food, sometimes within minutes, and they can range from mild and annoying to frightening and life-threatening. People who are especially sensitive may have a reaction from simply touching the food or breathing in particles of it.

Symptoms of a food intolerance may be extremely uncomfortable, but they are typically less serious than the symptoms of a food allergy.

In severe cases of food allergy, the person may suffer from a life-threatening reaction known as anaphylaxis or anaphylactic shock. This dangerous reaction can cause:
� tightening of the airways, including a swollen
throat that causes breathing difficulties
� shock, with a severe drop in blood pressure
� rapid pulse
� dizziness, light headedness, or loss of consciousness.

These are warning signs of a serious problem and require immediate medical attention. There is a medication (epinephrine) that people with serious allergies should carry at all times. It comes in a self-injecting device, and anyone who has food allergies or knows someone who does should know how to use the device. This can, quite literally, be a life saver. Even if the reaction is controlled quickly, immediate medical attention is still necessary. A single injection is not always enough to completely control the reaction.

People with severe allergies should also wear medical identification jewelry. During a severe reaction a person may not be able to speak, and this jewelry can identify the problem for emergency medical personnel so that the proper treatment can be given quickly.

When a child has a food allergy, the parents must take special precautions. Make sure that all caregivers (including family members, teachers, babysitters, and the parents of the child’s friends) all know how to use the epinephrine injection device. Older children should learn to use the device themselves.

Parents must also impress on children how important it is not to eat the food they are allergic to. Young children should be instructed never to eat food given to them by anyone other than a family member. Older children should be instructed to ask about any food someone gives them and to make sure the person giving them the food knows about their allergy and how serious it is.

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I found this article at the Today Show site on NBC. Celiac disease: What to look for on food labels
Millions in the U.S. suffer from bad food reactions, and celiac disease can be the cause. ‘Today’ food editor Phil Lempert offers a 101 on this condition

Celiac disease, more commonly known as gluten intolerance, affects one in 133 Americans. This lifelong disease causes intestinal problems when eating gluten, which is the common name for offending proteins in wheat (including durum, semolina, spelt, kamut, einkorn, and faro), rye, barley and oats. Gluten is like poison to people with celiac disease.

Celiac affects those who are genetically susceptible. In fact, if one member of a family has celiac disease, about one out of 10 other members of the same family are likely to have it as well. Some may harbor the tendency for a while without getting sick, but then stress, physical injury, infection, childbirth or surgery can actually “activate” the disease. The disease mostly affects people of European (especially Northern European) descent, but recent studies show that it also affects Hispanic, Black and Asian populations as well.

Because of the broad range of symptoms celiac disease presents, it can be difficult to diagnose. The symptoms can range from mild weakness, bone pain, and aphthous stomatitis to chronic diarrhea, abdominal bloating, and progressive weight loss. Those with celiac disease who consistently consume gluten can increase their chances of developing gastrointestinal cancer by a factor of 40 to 100 times that of the normal population. Furthermore, gastrointestinal carcinoma or lymphoma develops in up to 15 percent of patients with untreated or refractory celiac disease. Celiac disease should be quickly and properly diagnosed so it can be treated as soon as possible. Testing is fairly simple and involves screening the patient’s blood for antigliadin (AGA) and endomysium antibodies (EmA), and/or doing a biopsy on specific areas of the intestines.
Read the rest of this entry »

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