Certain soy products, peas, lentils, do they not agree with any PA folks?

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I have a serious PA/almond/nut allergy and I've notices certain food items like ground soy, or lentil soup goes down scratchy and doesn't agree....no serious reaction like Peanuts, but the legume connection makes itself very clear.

I was wondering of other people are in that same situation and if they can share the other not-so-obvious foods that don't mix well with the palate. How about flafel, chick peas, etc....? I'm okay there, but I was wondering.

Also, I've read stuff about peanut oil not containing the protiens that trigger the reaction. THis is supposedly true only for certain peanuts oils (apparently they are most of them) and the allergens are pressed out of the nut when the oil is made. Food for thought, but I'll be the last in line to take that as the truth....

Finally, one any others frustrated as heck now that the candy companies are listing stuff as being made in a factory that "uses peanuts" or "may contain peanut traces". I think its obvious that these are the same exact candy bars being made the same exact why, but they are protecting themselves. Now Kit Kats & Three Muskateers Bar, for example, instill paranoia. Someone please tell me its the same old candy bar!!!!!


On Jun 21, 2001

Hi! I think they changed the manufacturing process for Kit Kat. I called about 2 years ago and talked to a rep at the company. She said at that time the Kit Kat was made on a non-nut line, and the candy was safe for peanut allergic people. She said to always read the label each time I buy it because if the lines change and the product becomes unsafe, they will add a warning "May contain." I noticed the warning was added some time ago and we no longer buy them. You can call the company and ask about it, but I believe something probably changed in the way they manufacture the product.

As for lentils and other legumes, you may have a mild allergy to those. I have heard from an allergist at a conference I attended that, while most PA people can eat other legumes, a small percentage have allergies to other legumes. The most likely to cross-react are lentils and chickpeas (falafel is made from ground chickpeas). But other legumes can also present a problem. I know some people have posted here about allergies to green beans, kidney beans, pintos, and others.

On Jun 22, 2001

My pa son went from no reaction (or known allergy) to soy and legumes, to not tolerating them at all at 7 years old. At 10 he is now a RAST 4 to soy and several beans. He now just avoids all legumes.

On Jun 22, 2001

My son was allergic to lentils and soy as well as peanuts from very early on, and later developed sensitivity to chick peas, followed by regular peas and virtually all beans. We just stay away from this whole family now.

Licorice is in this family, although my son doesn't have any problem with the standard kind. Also, I believe caroway may be in this family. Here's a link to a wonderful site that lists foods by family:


On Jun 22, 2001

I find this whole subject really fascinating. I wonder if this type of cross-reactive tendency is inherited (as there is not a direct hereditary link for most severe FA, including PA)... The reason for the speculation is that my daughter has a severe PA, a moderate soy allergy, and no apparent symptoms with any other legumes (and given her other food allergies and toddler dining "preferences" [LOL!] we don't have much choice about avoiding them too). She is convinced that Hummus is its own food group. But the interesting thing is that DH has a serious (but not anaphylactic) walnut allergy as well as moderate allergies to soy (sound familiar?) and to green beans. I suspect that many legumes do not agree with him very well, since he is not very fond of garbanzos or of some dishes containing lentils.

I think that I probably should have her tested for some other legumes to find out what sort of IGE values we are talking about... at least we could try to slowly wean her off of the chickpeas!!

On Jun 22, 2001

There is really no point to testing for other legumes, as your daughter is likely to test allergic. The challenge is that virtually all people allergic to peanut will show allergies "on paper" to other legumes, yet only about 5% show clinical symptoms.

Here's Dr. Sampson's paper on the topic:


Basically, it says that people who are allergic to more than one legume recognize more than one of the common proteins between legumes. It may be a learning process of sorts...your body gets sensitized to the "peanut" proteins and then starts to become hypervigilent and identify other proteins as "peanut". The process is cumulative because legumes share so many common proteins. In my son's case, his immune system has "cracked the legume code" so to speak, and he is now allergic to virtually all legumes.

I think whether you'll have a problem depends a lot on which of the peanut proteins you're allergic to initially, and what type of allergy you have. Some peoples' bodies recognize the protein only if it retains its 3-dimensional shape; others can recognize the protein in its two-dimensional strand form, or even in pieces. This would explain why some milk-allergic children (like my son) are allergic even to hydrolized formula where they break the cows' milk protein into pieces.

If you're not allergic to the "trigger" protein in peanut...or if your body only reacts to the 3-dimensional shape...you theoretically shouldn't have a problem with other legumes. The issue though is that there's no way to tell who's allergic to what protein and in what way though reactions or tests. I guess people have to decide if they want to play the odds - only one in 20 develop further legume allergies, but if you do, they can be a bear to deal with!

On Jun 25, 2001


I am concerned about cross-reactive responses with legume pollen. Certain types of landscape legumes, trees & shrubs, release large amounts of pollen and allergy to them are already common. I see these cross-species and cross-family reactions frequently. Example: Someone becomes allergic to almonds and then they have the propensity to become allergic to cherries. Why? Cherries and almonds are both in the Rose family and additionally connected, both are in the genus Prunus. Furthermore, of the Prunus group, these two species are frequently wind-pollinated, unlike say, apricots. My concern is legume pollen and how it relates to those who already have an allergy to peanuts. From what I have seen already with pollen-related allergies and pollen/food related allergy, it makes total sense that this is an area of concern--especially since peanut allergy is so acutly dangerous. In California acacia trees and groundcovers (both are legumes)are increasingly being used, especially by the State highway department. In Arizona and Nevada and some other SW states, acacia, mesquite and other legume trees are again being used in urban areas more and more. In many other states there has beeen much increased use of Gleditsia tricanthos, Honey Locust trees. These in nature are monoecious and always have both sexes on the same trees. The ones being planted en mass though, are "improved" cultivars (clones) and they are all "seedless" or "podless." This is because they are now all male--and as such they release pollen but don't trap any of it.

------------------ Tom Ogren