PA/legume allergic can you tolerate soybean

Posted on: Mon, 01/22/2001 - 10:47am
ARI's picture
Joined: 12/14/2000 - 09:00

pHi all, This discussion was started under the licorice thread but EB suggested I start a new topic to see how many people other people have the same reactions. /p
pI have a 2 year old PA allergic son who had the most horrible reaction to peas we had ever seen. He skin tested negative to peas on a scratch so I gave them to him, the reaction was unbelievable and he never ate them only played with them. Herein lies the question, if you are legume allergic can you tolerate soybean, is it actually from a "bean" . He also tested 3+ on soybean but eats it with no problems. My part B to this is (now Im being pushy) are legume allergics Forever or will/should they subside with age???? The doc said he tested neg. to peas and then retested and said he was positive??? Also are many PA people also legume allergic. /p
pAny info would be appreciated. /p

Posted on: Mon, 01/22/2001 - 12:14pm
MattsMom's picture
Joined: 09/17/2000 - 09:00

I can't give you many specific answers, unfortunetly, but I can give you our experience. First off, peanuts ARE a legume, so the answer to your question: Are many PA people are legume allergic? is yes. As far as the soybeans are concerned, my son tested neg for soy and eats things all the time that contain soy with no known problems. He hasn't had a whole lot of soy at one time though (like soynut butter or something like that) so I won't say am I 100% positive he has NO reactions whatsoever to soy. I will say that I don't consider him allergic to soy based on the fact that I have seen no problems with things that contain it and he also tested neg. (did that make sense?)
As to legume allergies being forever? Our allergist said that a peanut allergy is almost always life-long, as are most tree-nut allergies. She said that other allergies, like to fruits, veggies, etc, are more often outgrown than not, but that it was possible to ALWAYS be allergic to any of them. I hope that helps.

Posted on: Mon, 01/22/2001 - 1:29pm
anonymous's picture
Joined: 05/28/2009 - 16:42

ARI - I copied the following info from a Peanut and Soy Allergy Handout:
Should I avoid other legumes, e.g., peas, beans or soya?
No, not unless you are actually allergic to them as well. Even though the skin test is positive, if you have been able to tolerate peas, beans and other legumes before, they may be continued, unless you begin to react when you eat them. In addition to peanut, legumes include peas, beans, Soya, chick peas (garbanzo beans), lentils, split peas, lupin seeds, dahl, tamarind, licorice, carob, soy sprouts, bean sprouts, cassia, alfalfa, fenugreek, tragacanth, acacia and senna. Most peanut allergic people can eat other legumes even if they have a positive skin test to these other legumes. Because peanuts are related to peas, beans and other legumes, these other legumes may show a mild positive skin test in a peanut allergic person but that person can still eat them. However, a positive skin test to one of these legumes means that the peanut allergic person does have some chance of developing an allergy to the legume later although if an allergy does develop, it is usually mild. In these cases, the allergy may cause only itchy mouth or throat. The legumes most likely to cause allergic reactions in peanut allergic people are dried mature legumes e.g., dried peas and dried beans, whereas green peas and green beans are often tolerated. Soy is very unlikely to cause an allergy in peanut allergic people.
In my personal experience with Cayley, she tolerates legumes, including soy, with no problem. She was on soy formula after developing an allergy to the milk formula I was using to supplement breastfeeding.
Her favourite vegetable is peas, but she hates pea soup (dried yellow soup peas), so I definitely don't push the issue. I really feel that an allergic child's strong food dislikes may be a "warning" sign of trouble in the future with that particular food. As the handout said, fresh peas are less allergenic than dried. Hope this helps.

Posted on: Tue, 01/23/2001 - 3:17am
Charlene McFalls's picture
Joined: 01/23/2001 - 09:00

Hi, My 2 year old PA son IS allergic to peas and had a severe reaction to split pea soup unbeknowst to me. We had to give him the epi-pen. He is also allergic to peas of any kind including soybean. I drink soybean milk because of a dairy allergy to my infant son that I nurse. My PA son took one bite of my cereal and had a reaction. I consider all peas and beans and nuts a No-No to my child. Also, these food items did not show up on his skin test but soybean came up a 3+ on his rast test. I basically live and learn the hard way. I'm his best allergy test. I hope this helped.

Posted on: Thu, 01/25/2001 - 12:28am
Liz's picture
Joined: 01/17/1999 - 09:00

I am allergic to soy and peanut and so far I have had reactions to every other legume I've tried. As mentioned, dried peas or beans give me more trouble than fresh, and beans (like string) with no seeds give me no trouble at all.
The problem with skin testing for similar foods is that one may cause the reaction to the other - the proteins are too similar. That may explain your son's results.
You don't mention what soy products your son eats - his reaction or lack of it may have a lot to do with how much soy protein he is exposed to. Soy oil, sauce, lecithin, are not big risks, tofu, soy nuts, soy butter are. And yes, most soy products are made from the mature seed.
I'd not risk feeding him legumes now - my reactions have gotten worse with time and exposures, and grown to cover more and more foods.

Posted on: Thu, 01/25/2001 - 7:04am
Dave's picture
Joined: 12/11/2000 - 09:00

As a 60 yr old PA all my life, I can report no problems with soy!

Posted on: Thu, 01/25/2001 - 10:37am
Adrian's picture
Joined: 01/25/2001 - 09:00

My son always tested positive to peanut and negative to Soya. We always avoided peanut-(he is anaphylactic) and noticed that products he occasionally consumed with soya sometimes gave him a stomachache-that is until at the age of eleven he had two full blown anaphylactic reactions to soya. We were told that this type of sensitivity is rare but there you go.

Posted on: Fri, 01/26/2001 - 8:51am
Kesnerunme's picture
Joined: 01/08/2001 - 09:00

Hi, I am somewhat new to this site, I have read it for about a year but never replied to any, this one really hit home...My son now 5 1/2 was diagnosed PA at age 2, also testing positive for legumes and after a reaction to peas added one more, the most severe reactions have come from Soy Protein (Yuk) just the word makes me cringe only because it seemed to be a hidden allergy that wasn't diagnosed until after 3 severe reactions and the process of eliminations to me soy is just a cheap filler that causes as much grief and anxiety as Peanuts just in disguise. Hope this helps

Posted on: Sat, 01/27/2001 - 2:17pm
Head Cook's picture
Joined: 11/19/2000 - 09:00

My 10 year old pa son did not react seriously to soy until he was about 6. He has negative skin tests to soy, but rast tests at 4+. His reactions have varied and seem worse as he has gotten older. The soy allergy diagnosis was a big drag, but a big relief because removing it from his diet dramatically reduced his asthma. It went from daily, to just exercise and the end of a cold. When he has big asthma now we usually end up tracing it back to hidden soy or msg.

Posted on: Sun, 01/28/2001 - 10:44am
maddiesmom's picture
Joined: 12/20/1999 - 09:00

My 2 1/2 year old little girl is PA and is allergic to soy. She tested positive to peas a year ago and then negative to peas on the skin test recently but I gave her peas just a few weeks ago for dinner and she ate 2 and started to get very bad hives around her mouth. Very interesting. When I asked her allergist he just told me to avoid them completely. Her reactions to soy are confusing and hard to track. She will get SEVERE diarrehea (spelling?) when she has certain food with soybean oil or soy lecithin in it IF it is like one of the first 6 ingrediants. BUT, if those soy products are low on the list she seems to be okay with it. When she does have a reaction to soy, she gets very irratable and cranky and then has horrible upset stomach. We are potty training right now so it is very hard. SOY IS IN SO MANY THINGS! I just hope she outgrows it is frustrating as a mom to not know what she can eat and what she can't. AND it is hard to find things without any soy products in them. I find that sometimes dealing with her PA allergy on a daily basis is EASIER than her soy allergy.

Posted on: Tue, 01/30/2001 - 12:38pm
tkiaml's picture
Joined: 06/18/2000 - 09:00

My 2 year old son was just tested again today(he has been severly allergic to wheat, eggs, dairy, PA/nuts) Well, we get to add a few more to these...dust mites, cats, mold.
He had a small reaction to soy...He won't drink soy at all but has recently let me put it on his oatmeal without complaint. He eats soy crackers, and soy pretzels. I asked my allergist if that means no soy anymore. He said he can continue to have soy...and that he expected this type of result because peanuts and soy are so closely related (legumes) that sometimes a soy test comes up slightly positive. (not his exact words). Does this help any??


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