Hi JC and Paleocautionary People,

  foods that,
>albeit paleo, must be used or handled with caution. Are there any such
>foods?

I have problems with nuts and seeds and their products. Eggs, because the 
chickens are fed grains, give me allergic symptoms.

Latex is another one :
From: http://vanderbiltowc.wellsource.com/dh/Content.asp?ID=610:

So What's the Fruit Connection?

People who are allergic to latex products may experience allergic reactions 
due to cross reactivity from a variety of fresh fruits, vegetables, and 
nuts. Cross reactivity occurs when your immune system mistakes a similar 
protein or chemical composition in a food for the proteins found in latex, 
according to the American Academy of Allergy, Asthma and Immunology 
(<http://www.aaaai.org>www.aaaai.org).
    * These foods commonly trigger allergic symptoms in latex-sensitive 
people: banana, avocado, chestnuts, hazel nuts, kiwi, melons, tomatoes, 
carrots, celery, papaya, and potatoes.
Latex-sensitive people are at greater risk of developing severe food 
reactions, known as anaphylaxis, which is a true 9-1-1 medical emergency. 
The first signs of anaphylaxis may be a feeling of warmth, flushing, 
tingling in the mouth or a red, itchy rash. Other symptoms may include 
feeling lightheaded, shortness of breath, severe sneezing, anxiety, stomach 
or uterine cramps, and/or vomiting and diarrhea.

Inulin: From: 
http://www.pdrhealth.com/drug_info/nmdrugprofiles/nutsupdrugs/inu_0299.shtml
Inulins are present in onions, leeks, garlic, bananas, asparagus and 
artichokes, among other vegetables and fruits.

I looked up durian allergy:
http://web.telia.com/~u35111983/exoticfruit.htm

Meat allergy:
http://www.labspec.co.za/l_meat.htm

Fruit allergy:
http://www.labspec.co.za/l_fruit2.htm#Pineapple

Paleobest,
Susan