thanks for that celeste
re "Serum ferritin was logarithmically and inversely associated with nonheme-iron absorption"
that means when non-heme iron absorption is high, that serum ferritin is low and vice versa - when non heme iron absorption is low, that serum ferritin is high.
so I'm not sure how that can possibly mean that non heme iron goes to serum ferritin. it sounds like the exact opposite.
re the study "Nonheme-iron absorption, fecal ferritin excretion, and blood indexes of iron status in women consuming controlled lactoovovegetarian diets for 8 wk"
I think about all that particular study demonstrates is that 8 weeks isn't a long enough time period over which to observe changes in iron status from diets with varying amounts of heme vs non heme iron, in spite of the fact that vegetarians are far less successful at absorbing even non-heme iron compared to omnivores.
dr wahls having been vegetarian makes tons of sense. many of the nutrient deficits for which vegetarians are at higher risk are commonly low in the average ms patients too. iron is just one of several important nutrients to consider. I've definitely found serum ferritin a useful indicator of iron status over time.
as far as other indicators of iron status, the trusty old klenner protocol for ms specifies a hemoglobin of at least 13 and I know when I was given the extensive blood work when I was diagnosed (before making any dietary changes), my Hb was around 11. it's much better these days.
I personally was a strict vegan for well over a decade, prior to diagnosis. I've tracked deficiencies and improvements for lots of nutrients including but absolutely NOT limited to iron.
as far as the iron is concerned, as my status has improved, serum ferritin has consistently gotten higher, indicating better iron stores now than I can ever remember seeing on any pre-dx test.
all the same, I definitely would never lay all my improvements at iron's door. ignoring the rest of the picture, particularly zinc, would be done at the patient's peril. fortunately, heme iron foods usually contribute zinc in a way that is not the case with non heme iron foods. I would not be surprised if the zinc component of your daughter's heme iron food intake is at least partially responsible for her improvements. she still has a way to go however. serum zinc should be much higher - closer to 120 if you can get her there.
re iron zinc interactions, I refer you again to :
my approach: no meds so far - just nutrient-dense anti-inflammatory whole foods, and supplements where needed
info: www.whfoods.com, www.nutritiondata.com