hi coach! you taking any supplements? like vitamin d3, or magnesium, anything like that? could be an interaction. or if not, could just be a typical ms nutrient problem.
fyi child-bearing exacts a heavy zinc toll and zinc deficiency is seen in ms patients and in a variety of eye problems, including optic neuritis.
zinc and optic neuritis:
Zinc in the eyehttp://www.surveyophthalmol.com/article/0039-6257(82
"The highest concentration of this trace element in the human body is measured in the eye..."
"Diminished serum zinc levels have also been shown in cases of ... optic neuritis"
zinc levels pregnant and non-pregnant: (all participants were deficient by my reckoning - healthy control zinc levels should be high teens)
Zinc concentrations in maternal blood during pregnancy and post partum, in cord blood and amniotic fluid.http://www.ncbi.nlm.nih.gov/pubmed/3439449
"Maternal serum zinc concentration in early and term pregnancy was significantly lower than that of the non-pregnant controls (mean values +/- SEM being 9.8 +/- 0.6, 9.3 +/- 0.2, and 11.5 +/- 0.3 mumol/l, respectively). Maternal serum zinc concentrations reached the non-pregnant level by one week post partum."
improved zinc status 30 days post partum:
Antepartum/postpartum depressive symptoms and serum zinc and magnesium levelshttp://www.if-pan.krakow.pl/pjp/pdf/2006/4_571.pdf
"...the early post-delivery period (3rd day) was characterized by a 24% lower serum zinc concentration than that found on the 30th day after childbirth."