What to watch with Selen and stress?

Selenium is an essential trace element that, as a component of selenoproteins, plays a key role in antioxidant defense and thyroid metabolism. Chronic stress can increase selenium requirements because oxidative stress and inflammatory processes deplete selenium reserves. Selenium deficiency has been linked to impaired stress response, increased susceptibility to infections, and compromised thyroid function (e.g., conversion of T4 to T3). However, the evidence for a direct 'anti-stress' effect of selenium in humans is mostly mechanistic or derived from observational studies; randomized controlled trials show inconsistent results. Excessive selenium intake (e.g., through uncontrolled supplementation) can be toxic (selenosis). MyBody-X offers a TSH home test that can provide a preliminary indication of thyroid function but does not measure selenium status. If you are under stress and suspect a thyroid issue, you should have your selenium status (e.g., in whole blood or plasma) assessed by a physician before supplementing. The current evidence is insufficient to recommend general selenium supplementation for stress.