zinc deficit underlies celiac disease as well as poor b12 absorption.
related recent discussion undiagnosed-f54/topic24419-75.html#p223508
related reading: Could your gluten intolerance be the result of a mineral deficiency?http://www.naturalnews.com/042519_glute ... _zinc.html
also, more relevant to you in particular:
Influence of Training Frequency on Serum Concentrations of Some Essential Trace Elements and Electrolytes in Male Swimmershttp://link.springer.com/article/10.100 ... 014-9912-z
Another point of note was a drop of copper, zinc, and selenium levels at 1 h after the test in elite swimmers. The decrease in serum zinc was also observed in the other groups. Results highlight the value of regular control of elemental status to provide insight into transient effects and deficiencies.
On the Significance of Magnesium in Extreme Physical Stress http://link.springer.com/article/10.102 ... 7708918683
In a double-blind randomized study, 23 competitive triathletes competing in an event consisting of a 500-meter swim, a 20-km bicycle race, and a 5-km run were studied after 4-week supplementation with placebo or 17 mmol/d Mg orotate. The tests were carried out without a break. Blood was collected before and after the test, and between the different events for assaying energy stress and membrane metabolism. Swimming, cycling, and running times decreased in the Mg-orotate group compared with the controls
. Serum glucose concentration increased 87% during the test in the control group and 118% in the Mg-orotate group, while serum insulin increased 39% in the controls and decreased 65% in the Mg-orotate group
. Venous 2 partial pressure increased 126% during the test in the controls and increased 208% in the Mg-orotate group. Venous 2 partial pressure after the bicycle race decreased 66% (significantly) in the Mg-orotate group compared with 74% in the controls. Blood proton concentration decreased to 90% in the Mg-orotate group (significantly) compared with 98% in the controls. Blood leukocyte count increased from 5.92/nL to 11.0/nL in the controls and from 5.81/nL to 9.10/nL in the Mg-orotate group, a significant difference. Serum cortisol was lower in the Mg-orotate group before and after the test compared with the controls.
CK catalytic concentration after the test was elevated 140% in the controls compared with 122% Mg-orotate group. The stress-induced modifications of energy and hormone metabolism described in this study indicate altered glucose utilization after Mg-orotate supplementation and a reduced stress response without affecting competitive potential
if you eat lots of gluten grains, it could certainly be contributing to a possible nutrient depletion situation