picante
Senior Member
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- Helena, MT USA
I wondered the same thing yesterday. From the "Laboratory Evaluations" paragraph:It sure would be great to know if they measured folic acid or fully metabolized folate.
I went as far as looking up the Quantaphase kit, which has a highly complicated lab protocol involving radioactive markers etc. etc. But they never did define "folate", the substance they're quantifying.Serum folate levels were measured by radioassay with the Quantaphase II Folate kit (Bio-Rad Laboratories).
For me, this sentence does not instill confidence about this study:
On the one hand, the concomitant rise in allergic diseases(31;32) and serum folate levels in the United States(33) suggests that the relatively recent enrichment of the US diet with folic acid may be a risk factor for allergic disease, an observation that would be consistent with the findings in mice.
I would not bother contacting the authors, but would check other studies if you really want to know what the science says about methylfolate and allergies or methylfolate and inflammation.
Just a guess: Even if you manage to find papers that distinguish methylfolate from folic acid, they will probably not draw consistent conclusions. There is an interaction between methylfolate and B12. If you get too much methylfolate for the amount of B12 in your cells, you get blocking of B12 activity (methyl trap) and therefore inflammation.
This is the problem with uni-factorial studies.