Hello BC members: I search google before i post this thread and i find some seaches that iron is loss through sweat. I played badminton a lot and i sweat a lot. Recently, we have this annual physical examination and my diagnosis is a lower level of iron. Our company doctor check already for my stool and urine but there where no signs of blood lose in the results. He already gave me some iron supplement medicines and i have taken these for about two weeks now. Doctor prescribed 30 pcs. Now we are going to have our company sports fest and it was a requriement that we secure medical clearance before we can play/join any sport event. Our doctor told me to just have a CBC (complete blood count) test again and if the levels are already normal then it is no problem for the clearance. i have taken the supplement for two weeks now but i was surprised that the results came same, still low level in iron. Haven't shown the doctor the recent results probably next week. however, my only analysis now is that i probably loose iron due to too much sweating and playing badminton. Does anybody experiencing low levels of iron due too much badminton play? Or is sweating a lot really the reason since i am not loosing any blood as seen from the result of my stool and urine test? Any similar experiences from other members?