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Martin, Pronobis, B_Jim, please feel free to invite this French POIS-sufferer to our forum! http://www.sexologie-magazine.com/corps/questionsCorps/CorpsQR25.html
Thank you, Pronobis, for posting that in French! 
Quote from: demografx on 19/05/2009 22:31:19Thank you, Pronobis, for posting that in French! Thank YOU for the hope
Then we could translate the Wiki article and post it in the different language sections of the site.
I am severely deficient in vitamin D! The normal range is 25 to 80 ng/mL, whereas mine was measured at 12.9 ng/mL. So, the doctor recommended supplementation, which I will start right away.
Some potentially significant bloodwork results:This past week, I went to my doctor for a routine physical. They did some standard bloodwork (CBC profile, metabolic panel), which I had also had done in previous visits. All of these came back normal. However, this time, they also tested for Vitamin D, which I had not been tested for previously. According to the results, I am severely deficient in vitamin D! The normal range is 25 to 80 ng/mL, whereas mine was measured at 12.9 ng/mL. So, the doctor recommended supplementation, which I will start right away.The doctor's primary concern involved the relation between vitamin D and calcium absorption, such that a deficiency in vitamin D could lead to bone problems over the long term. However, after coming home from the doctor, I did some further investigating, and found that Vitamin D is also involved in other processes that may have a more direct connection to POIS!Just drawing upon the basic wikipedia article on vitamin D (http://en.wikipedia.org/wiki/Vitamin_D), it appears that vitamin D is involved in autoimmune response, seasonal affective disorder (i.e. certain forms of depression), and forms of cognitive impairment (including "foggy brain" i.e. our old friend brain fog). All of these seems related to key POIS symptoms.From searching the POIS thread on the forum, I noticed that vitamin D had been mentioned a few times before. So, I will start supplementation, and report on my results. Who knows, perhaps this could turn out to be a key breakthrough (although I shouldn't jump too quickly to any conclusions). The one thing that I'm most happy about (although this may seem a little weird) is that the doctors finally found something wrong with me. That is, I'd been going to the doctor for a couple of years now specifically for POIS, and I've had a number of tests done (including testosterone), and they all came back normal--ARRRGH! Now, at least, there is a little proof that my personal experience of "unhealth" is not all in my head (even though this vitamin D issue may turn out to be unrelated to POIS). So, that is nice.
Hi Guthrie. Good news! Interestingly enough, a very good endocrinologist, after hearing my symptoms, actually suggested I get "25 OH Vitamin D" tested. Is this the specific test you had?PS. Don't overdose on vitamin D! It can be dangerous to take too much.
I agree with Cp about Vitamin D overdose.
Endoís visit- I told him symptoms, not the sexual thing. And showed my blood test results.Endo then:- saw my low t and wrote down hypogonadism. Though he said it was not so low that he thought there should be done something about it, also because one test was just in range. He also said low T might be the outcome of other illness (adaptation of the body as he called it).- ordered MRI pituitary. Donít know why he did that, but this is good news.- touched testicles ; to make sure they existed and were large enough. That was ok.