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A 33-year-old member asked:

why do some people have food allergies?

3 doctor answers9 doctors weighed in
Dr. Stephen Kimura
Allergy and Immunology 35 years experience
Great question!: We know that genetics play a part. Allergic parents tend to have allergic kids. Exposure to the food allergen is controversial. It appears that early exposure to foods can cause allergies to develop. How early is the question. Some recent studies even show the opposite effect. I always counsel high risk kids, to avoid highly allergenic foods early. Foods such as nuts, peanuts, shellfish.
Dr. Yoram Padeh
Allergy and Immunology 22 years experience
Genes + Exposures: There are genetic predispositions for allergies in general, and to specific types of allergies as well (e.g. Food vs medication vs environmental allergies). However, just the genetics does not guarantee developing an allergy. There must also be an exposure in the "right" situation to trigger the allergy. The details of the "right" situation remains unclear.
Dr. Steven Machtinger
Allergy and Immunology 44 years experience
I agree with Dr. Padeh. Current research is looking at adding highly allergenic foods to the diet earlier rather than delaying their introduction for several years. Current guidelines on introducing foods to infants no longer recommend delaying.
Sep 16, 2012
Dr. Alyson Simpson
Allergy and Immunology 17 years experience
Multiple reasons: There is still a lot of research on this topic. And multiple environmental and genetic factors. Some studies suggest that touching certain foods prior to eating them increases our sensitization. There are studies looking into whether children with eczema and atopic dermatiits are more prone to food allergy secondary to the poor skin barrier.

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A 19-year-old female asked:

If I shared food with someone who had mono when they were 2, will I get mono?

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Unlikely: While one has antibodies for life after being exposed to the virus that causes mono. The virus should no longer be causing a problem.
A 46-year-old member asked:

Is having a guilty conscious about food a healthy way to lose weight?

1 doctor answer3 doctors weighed in
Dr. Pamela Pappas
Psychiatry 42 years experience
No: A guilty conscience about food is not a healthy way to lose weight. Healthy food nourishes your body and keeps it running well. Emotional problems can sometimes confuse and complicate the process of eating, though. For instance, some with binge eating disorder suffer guilt about food. See your physician if you're concerned about your weight or your feelings about food.
A 42-year-old member asked:

What causes chest pain when taking deep breaths and when swallowing food?

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Dr. Gutti Rao
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Several: You should not have chest pain when taking a deep breath or on swallowing. You better get checked.
A 31-year-old member asked:

Are allergies a autoimmune disorder?

2 doctor answers7 doctors weighed in
Dr. Andrew Murphy
Allergy and Immunology 29 years experience
No : Allergies are not autoimmune disorder. Allergy is the overproduction of ige, the allergy antibody, to various allergens in the environment. Autoimmune disease is different antibodies to "self" antigens.
Canada
A 25-year-old female asked:

Why is my 2 year old daughters stool always a shade of green? I rarely give her juice or food coloring so it cannot be the dye...

2 doctor answers4 doctors weighed in
Dr. Prakash Bhoopalam
Pediatrics 43 years experience
Normal!: It is not uncommon in some children. If the stool is formed , child is growing i would not worry about it. It is often from green leafy vegetables, coloring agents in the food or simply due to rapid transit from small intestine to large intestine where it normally is tuned brown.

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Last updated Jul 17, 2017

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