has anyone ever mentioned the possibility of athletic nutrient depletion to you?
here are some related discussions going back over a few years of inquiries here at TiMS:under-25-with-ms-f23/topic24219.html#p221356
your dietary changes will likely have helped curb ongoing nutrient loss, but they can't replace chronically depleted nutrients or make the remainder of your diet more nutrient dense. you may need therapeutic replacement.
the bloodwork can be problematic b/c mainstream medicine doesn't have the best tools to work with when it comes to assessment. but we've spent a lot of time on bloodwork interpretation issues here and can help you get meaningful info from any results that you can get your hands on.
for infection and ED I would suggest you look at testing for serum zinc. for infection on its own, serum selenium. for muscle twitching, you could look into testing serum magnesium. there are other important nutrients to consider but those could be a useful first step.
Iron status in elite young athletes: gender-dependent influences of diet and exercisehttp://link.springer.com/article/10.100 ... 011-2002-4
"Iron depletion (serum ferritin < 35 μg/L) occurred in 31% of male and 57% of female athletes (P < 0.001)."
Magnesium status and exercise performance in athletes
(horrible link, just search for the paper in google scholar)
"Surveys of athletes reveal that frequently, these individuals fail to consume a diet that contains adequate amounts of minerals, including magnesium. Individuals engaged in intense exercise should have a magnesium requirement 10 - 20% higher than the average sedentary person, because of increased losses through sweat and urine. Magnesium deficit is associated with muscle weakness, cramps, and structural damage of muscle fibers and organelles"
Zinc, iron, and magnesium status in athletes--influence on the regulation of exercise-induced stress and immune functionhttp://europepmc.org/abstract/MED/9644092
"Many investigations have reported decreased concentrations of trace elements in blood and tissues after training and competition. ... This paper reviews the data on zinc, iron, and magnesium status in athletes and summarizes the consequences of deficiencies in these trace elements regarding exercise tolerance and immune function. These elements were chosen since there is evidence they are related to exercise-induced stress and immune function."
hope that helps and provides some encouragement