Patricia,
Here is a re-post of some info and references I originally posted to
LactNet last October.
See the following:
http://www.bmj.com/cgi/content/full/316/7149/1926/a British Medical
Journal article [BMJ 1998;316:1926 (27 Jun)] titled "Women warned to
avoid peanuts during pregnancy and lactation."
The article reports on advice from the British government's Committee
on Toxicity of Chemicals in Food, Consumer Products and the
Environment, which studied the question of why peanut allergy (in
particular) seems to be increasing.
Quoting from the article:
"John Warner, professor of child health at Southampton University and
a member of the government's working group on peanut allergy, said:
'Maternal consumption of peanuts and peanut products seems to be
associated with earlier onset and increasing prevalence of allergy.'
"Evidence from aborted fetal samples shows that from the second
trimester onwards fetuses are capable of producing an allergic
reaction. There are several theories on how sensitisation occurs.
Some research shows that antigens from the mother can cross the
placenta, whereas other work suggests fetuses can swallow IgE from
the amniotic fluid, causing sensitisation."
(end quoting)
Other pertinent references:
Cohort study of peanut and tree nut sensitization by age of 4 years.
BMJ 1996;313:514-517
Managing peanut allergy. BMJ 1996;312:1050-1051
Prevention of peanut allergy (Commentary). Lancet 1998 Jul 4; 352(9121):4-5
Peanut allergy (correspondence). Lancet 1998 Aug 29; 352(9129):741-742
Exposure to peanuts in utero and in infancy and the development of
sensitization to peanut allergens in young children. Pedatr Allergy
Immunol 1999 Feb; 10(1):27-32
Margaret
mother of a formerly pecan-allergic child (via breastmilk; he had an
anaphylactic rxn that landed us in the emergency room) who
miraculously tested negative for *all* nut allergies after 3+ yrs of
mother's milk and 2+ yrs of sparing his gut from this insult
LLLL
Longmont, CO
>------------------------------
>
>Date: Sun, 15 Jul 2001 21:46:13 -0700
>From: "Patricia J. Ellis" <[log in to unmask]>
>Subject: Peanut allergies
>
>I believe I have seen this topic here before, but two mothers asked me =
>this week about peanuts, pregnancy, breastfeeding, and allergies. I =
>think they said they had seen something on TV. Other than the caution =
>about known allergies in the family, and moderation in foods, I really =
>did not know if there was new information/evidence for avoiding peanuts. =
> Comments?
>Patricia Ellis, RN, MA, IBCLC
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