lillibet: (Default)
[personal profile] lillibet
There's an interesting newsbrief in last week's New Scientist about possible connections between breastfeeding and allergies. Since several folks on my flist are interested in breastfeeding, I thought I'd share it.

Breast is best, but watch out for the allergies
* 05 August 2006
* Matt Kaplan

MOTHER'S milk is undeniably the most nutritious food for babies, but can they have too much of a good thing? While exclusive breastfeeding during the first six months of a child's life is thought to help prevent allergies, it is not clear whether further breastfeeding is beneficial in this way.

Twenty years ago researchers at the Helsinki Skin and Allergy Hospital in Finland asked 200 mothers of newborns to maintain exclusive breastfeeding for as long as possible. The children were assessed for allergies at ages 5, 11 and 20.

Exclusive breastfeeding for nine months or more actually appeared to increase the chances of a baby developing allergic conditions such as eczema and food hypersensitivity. At age 5, 56 per cent of children with a family history of allergy who had been breastfed for nine months or more had allergic symptoms, compared with 20 per cent of those who had been breastfed for between two and six months.

The researchers noticed that children who developed allergies after prolonged exclusive breastfeeding were most likely to do so during the first years of life, suggesting that environmental factors such as pollen exposure, diet and disease are the more important factors in the onset of allergies in later childhood and early adulthood.

"A beautiful hypothesis is that there is a time window when the immune system needs to be exposed to external antigens for it to develop properly," says team member Maria Pesonen, although more research is needed to be sure.

Date: 2006-08-18 11:03 pm (UTC)
From: [identity profile] pekmez.livejournal.com
Does prolonged exclusive breastfeeding imply not introducing other
foods as well as not introducing formula, though? I imagine most
people who breastfeed around here do feed other foods well before 9 months,
which would provide exposure to food-based antigens...

Date: 2006-08-18 11:14 pm (UTC)
muffyjo: (Default)
From: [personal profile] muffyjo
That's fascinating. I've heard another theory that the craze of "keep everything sterile" was part of the problem. Not that you shouldn't wash things, but the whole "everything in the room MUST be sterile" argument is a little over the top.

Me, I'm a "3 seconds on the floor won't kill ya" kind of gal. Willa breastfed until they stopped (well, the little one still breastfeeds at night). Ethan (who is five) occasionally still asks, but really it's a comfort/competition thing at this point and she doesn't have a problem saying "no".

Date: 2006-08-19 12:30 am (UTC)
From: [identity profile] kerri9494.livejournal.com
Always the skeptic, I don't know how much credence I'd give a single 20-year-old study done in Finland, especially when other research shows just the opposite. http://www.lalecheleague.org/NB/NBJulAug98p100.html

The other thing the abstract doesn't mention -- were these temporary allergies, or permanent? Lots of kids, breastfed or not, develop things like allergic eczema and food allergies very early in life, but grow out of their allergies as they grow a few years older, many disappearing by adolescence.

If I had my way, I'd still be nursing, only because we both LIKED it so much. :-)

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