Danny D.
2013-01-10 07:36:49 UTC
I and others have noted becoming
less sensitive to poison oak over time and have attributed
it to drinking the milk of goats that eat the stuff.
I suspect that very well could be the case. Allergies are clearly complexless sensitive to poison oak over time and have attributed
it to drinking the milk of goats that eat the stuff.
things, and they clearly have competing actions.
For example, we all know that to be exposed to allergens as a child when
our immune systems are developing is a way for the body to learn to
ignore harmless things such as almost invisible pollen or mold or dust.
Yet, there's the conflicting statement in this UC Davis site:
http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn7431.html
Which says (verbatim):
"Once a reaction occurs, repeated exposures further increase
sensitivity. Conversely, long periods with no exposure will
reduce an individual’s susceptibility."
That sentence makes sense based on how cell mediated immune responses
work in the body.
Yet, on the contrary side, as you noted, you can be exposed to the
allergen via other methods (in your case, via goat's milk).
For example, this site says some people were sensitized to urushiol via
mangoes:
http://toxnet.nlm.nih.gov/cgi-bin/sis/search/a?dbs+hsdb:@term+@DOCNO+7485
And this Wikipedia article says the same thing about cashew nuts:
http://en.wikipedia.org/wiki/Urushiol-induced_contact_dermatitis
Of course, people with AIDS or other immune disorders are said to have
vastly less of a response to poison oak.
http://waynesword.palomar.edu/ww0802.htm
And, just as our eyes and muscle mass deteriorate as we age, I suspect
our immune systems go downhill also as we age, which would potentially
affect the effect of urushiol on our bodies.
So, my only point is that the immune system is so complex, and so variant
by individual and age, that I don't doubt that goat's milk might help
confer greater immunity to the urushiol.
As for me, if the rash on my neck, ears, cheek, wrists and ankle is of
any evidence, I'm clearly not immune. Of course, this site says that a
single drop the size of a pinhead can infect 500 people:
http://poisonivy.aesir.com/view/fastfacts.html
So, I would be shocked if I did not get a rash, after all the globs of
sap that I was exposed to this week.