What role does Zink play in stress?

Zinc plays a key role in stress regulation, primarily through the nervous and endocrine systems. It acts as a cofactor for neurotransmitter synthesis (serotonin, GABA) and modulates the hypothalamic-pituitary-adrenal (HPA) axis, influencing cortisol release. Zinc deficiency is associated with increased stress reactivity, anxiety, and impaired coping. However, most evidence comes from mechanistic and animal studies; robust human clinical trials are limited. Supplementing zinc for stress relief is not routinely recommended unless deficiency is confirmed via lab testing. High doses (>40 mg/day) can cause nausea, copper deficiency, and immune dysfunction. Maintaining adequate zinc status through diet is prudent, but it is not a standalone stress remedy. Evidence level: mechanistic, with moderate human observational support.