Evaluate the Change in Iron, Vitamin D, and C-Reactive Protein Level (CRP) in a 12 to 24 Week Period

Inclusion Criteria: * Males and premenopausal females between the ages of 30 and 50 years old * Training through the Avera Sports Institute Triathlon Training Program * Agree to keep diet, exercise and all current health habits stable during participation in the study Exclusion Criteria: * Women who are pregnant, breastfeeding or planning to become pregnant * Has a chronic disease that affects calcium or bone metabolism * Has a chronic disease that affects iron metabolism or iron storage * Has kidney disease * Has any laboratory or biometric value that would indicate an issue for the safety of the study subject * Is currently participating in another clinical research study