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VIGEO Health — Optimize Your Micronutrients

Antioxidants, Training, and the Nutrient Balance Nobody Advertises

Your workout sends adaptation signals, and nutrients interact. More antioxidant protection is not the only question worth asking.

Dawn Westrum, VIGEO Health Published

Your workout is trying to tell you something. Antioxidants, copper, and the bigger nutrient picture. Editorial photograph of a Black woman runner writing in a training notebook on an outdoor track bench, with an orange and unbranded supplement bottle.

You finish a hard workout and reach for an antioxidant. Less oxidative stress, better recovery. Sounds sensible.

Except your body uses some of that stress to get stronger. And nutrients have relationships the front of the bottle rarely mentions.

High-dose antioxidants can affect training signals, while supplemental vitamin C can also affect a copper-dependent protein. That makes nutrient balance a better question than simply asking how much antioxidant protection you can buy. 1, 2

Your workout is sending a message

Exercise produces reactive oxygen species: molecules that can contribute to damage in excess but also help signal adaptation. Turning down that signal is not automatically an improvement.

In an 11-week endurance-training trial, daily vitamins C and E reduced changes in certain muscle markers related to mitochondrial adaptation. Yet both groups improved aerobic capacity, without a clear difference in running performance. 1

Interesting? Yes. Proof that vitamin C ruins your running? No. Your marathon has enough suspects already.

Vitamin C has a relationship with copper

Here is where the conversation gets closer to what we do at VIGEO.

Copper supports iron handling, energy production, connective tissue, and antioxidant enzymes. Helping one part of the system while overlooking another deserves a closer look. 3

Small human studies have found that supplemental vitamin C can reduce the activity of ceruloplasmin, a copper-dependent protein involved in iron handling. In one controlled study, 605 mg daily reduced its measured oxidase activity by about 21%, without significantly reducing copper absorption or overall copper status. 2

That is a reason to examine the interaction. It does not establish that everyone taking vitamin C becomes copper deficient, or that this explains the training findings. These are separate lines of research.

Could a long-running supplement habit matter more when copper intake or function is already compromised? That is a useful question, but these small studies do not settle the long-term outcome.

Look at the whole lineup

Your multivitamin contains vitamin C. So does the immune powder. The recovery blend adds another serving. None of the bottles knows what the others are doing.

Before adding more, total the daily amounts and ask what problem each product is meant to solve. Review copper-containing foods, overall fueling, and other supplements too. High zinc intake, for example, can interfere with copper absorption. 3

This is not a formula for automatically adding copper to cancel out vitamin C. It is a reason to review the whole routine rather than chase one number.

At VIGEO, nutrient relationships belong in the conversation from the beginning. Adequacy, dose, duration, and the rest of your diet all matter.

Your body is trying to build a better athlete. Give it a balanced supply cabinet.

Explore VIGEO's client resources for a more individualized nutrient conversation.

Sources

  1. Paulsen et al. Vitamin C and E supplementation hampers cellular adaptation to endurance training in humans: a double-blind, randomised, controlled trial. Journal of Physiology, 2014. Cellular outcomes and performance outcomes reported separately. https://pubmed.ncbi.nlm.nih.gov/24492839/
  2. Jacob et al. Effect of varying ascorbic acid intakes on copper absorption and ceruloplasmin levels of young men. Journal of Nutrition, 1987. Reduced oxidase activity without significantly reduced copper absorption, retention, serum copper, or ceruloplasmin protein; does not establish chronic copper depletion. https://pubmed.ncbi.nlm.nih.gov/3694287/
  3. NIH Office of Dietary Supplements. Copper, health professional fact sheet. Copper-dependent functions and zinc interaction. https://ods.od.nih.gov/factsheets/Copper-HealthProfessional/
  4. Additional research context: Finley and Cerklewski. Influence of ascorbic acid supplementation on copper status in young adult men. American Journal of Clinical Nutrition, 1983. Small study using 1,500 mg/day for 64 days; measured changes remained within physiological ranges. Indexed primary abstract verified; not proof of universal depletion. https://pubmed.ncbi.nlm.nih.gov/6837490/