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What can I substitute for fish and shellfish, if I am allergic to them?
Certainly there's good research to support including fish in one's diet, and this is a basic finding in Mediterranean diet studies. That said, there are a lot of folks who are allergic or simply don't like seafood. The menu plans in the The Dr. Gourmet Diet Plan software provide 6 days of seafood meals in a 2 week cycle.
What's the difference between a milk allergy and lactose intolerance?
My partner has said for years he thinks he's lactose intolerant. He can fairly easily digest skinny milk (i.e. only 0.10 grams of fat per 100ml), as well as goat's cheese. He finds the biggest culprits for upsetting his stomach are yoghurt made with cow's milk (both regular and low-fat) and cow's milk cheeses.
Peanuts and Pregnancy
The incidence of peanut allergy in children has more than tripled in recent years. Research tells us that 70% of allergies are identified at the child's first known exposure to the food and that food allergies require previous sensitization. In the past, this led some experts to recommend that women avoid nuts during pregnancy. Others suggested that nuts not be introduced into the child's diet until age 3.
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Those who have Atopic Dermatitis have skin that becomes red, scaly or flaky and very itchy in response to irritants, which can include foods as well as environmental factors such as certain fabrics or even cigarette smoke. About 80% of those people who develop Atopic Dermatitis show their first symptoms before they turn 5, which makes managing the condition a real concern for parents.
It appears that food allergies can contribute to Atopic Dermatitis, although we know that they are not the cause of the condition. A food allergy can be diagnosed by what is known as a scratch test: the extract of a possible allergen is applied to the skin and then the skin is pricked or scratched to introduce the allergen into the body. If the skin reacts to the scratch in a certain way, it's considered a good indication that the person is allergic to that allergen. Now that it is possible to perform blood tests for certain allergen antibodies, these blood tests are even more often used to diagnose food allergies than scratch tests.
The problem, however, is that scratch tests and blood tests are considered to be conclusive evidence of an allergy only for cow's milk, hen's eggs, fish, peanuts and tree nuts. (A gluten allergy diagnosis, for example, is only considered conclusive after a biopsy of the small intestine - antibodies are indicative but not conclusive.) The most conclusive test for all other food allergies is quite simple: can the food be eaten without triggering an immediate, clinical reaction?
Researchers from the pediatric departments of the National Jewish Health center in Denver along with the University of Colorado became concerned after noting that more and more children were being diagnosed with food allergies (J Pediatr 2010). With the best of intentions, parents were following their doctors' instructions and removing foods from their childrens' diets, in some cases leading to malnutrition and poor weight gain in the children. What if the diagnosis of a food allergy was wrong and the children could eat those foods?
The researchers reviewed the charts of 125 children who had been avoiding a particular food due to an allergy that had been diagnosed through a blood test but then underwent an Oral Food Challenge (actually ate the food under controlled conditions). All of the children had Atopic Dermatitis and 96% of them had active symptoms at the time of the test - many of them considered severe.
The children had been diagnosed with allergies to many common foods, from milk to vegetables to soy. After the Oral Food Challenge, at least 77% (and up to 100%) of the children were found to not be allergic to the food being tested.
If you or your children have Atopic Dermatitis and are avoiding foods based on a blood test alone, consider asking for an Oral Food Challenge. You may be avoiding a food for no reason.
First posted: November 17, 2010