Anonymous wrote:My DS is a good runner with some very competitive times in the 1600 and 3200, and had high level of success in x country. Started fading at the end of x country, we thought it was from stepping up the training for the season and a bit of burnout. Didn’t shake it and performance was pretty lackluster through the start of outdoor track, when he had a full blood screen - and ferritin levels were around 20, which by all accounts is very low for a male teenager. He had an iron infusion and has been on iron supplements (taking properly w vitamin c etc) - bit would be curious if anyone went thru this and how long to get back to normal levels - doctors opinions seem to vary tremendously
Supposedly for running based sports, blood cells can turnover very quickly, due to mechanical stress from pounding on the feet.