This is Dr. David
assault courses can be quite challenging
did you train before hand?
what is your most recent TSH levels?
have you had pulmonary function testing and cardiac stress testing?
that could definitely been due to your low iron
have you had your stools checked for blood?
it is normal for iron to cause your stools to be black.
the question should be why has your iron been low.
iron gets recycled in the body and usually most people get enough of it in their diets
through meat, steaks, spinach, etc.
if you are slowing loosing iron for any reason, or loosing blood slowly this can cause low iron.
women are more at risk, because they loose blood on a monthly basis through their period.
but another common area where you can loose blood slowly is through the GI system.
a small hemorrhoid could be slowly loosing blood or a small poly can slowly be bleeding
or a small diverticulosis in the colon could be bleeding slowly as well.
that is when a stool occult blood test is a good idea to try to detect and small slow blood loss.
I am glad you had testing for celiac and pernicious anemia.
it sounds like you don't hold on to B12 and iron very well.
this can be very common.
you might eventually need an upper endoscopy to look in your stomach to check for stomach inflammation or gastritis.
sometimes low stomach acid issues can cause poor absorption of iron and B12 and calcium in the stomach.
so your stomach might not be making enough acid to help with nutrient absorption in the stomach
or if you take excessive stomach acid blockers this can cause poor stomach absorption of iron and B12 as well.
but it doesn't sound like you are taking acid blockers or proton pump inhibitors.
perhaps your hemorrhoids are slowly bleeding into your stool
and that is what is causing the low iron issues.
and the low B12.
B12 low of 200 is good.
Normal values are 200 - 900 pg/mL (picograms per milliliter).
sometimes viral infections can cause severe fatigue.
so that can be checked as well
like ebstein barr virus infections.
good luck to you
let me know if you have other questions.
those can sometimes be caused by low magnesium blood levels as well.
so get that checked as well.
low magnesium can cause the nerves and the muscles to not function correctly sometimes.
and low B vitamins can do this as well
you should probably take a B complex vitamin daily
and get your magnesium levels checked.
if they are low as well, you might need to go on magnesium supplements.
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good luck with the visual and sensory evoke potential testing.
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let me know how it goes
MS would show up plaques in the brain on MRI scan
low mag and low B12 issues would not typically show up on MRI scan
but could show up in evoke potentials.
with slowly nerve conduction velocities.