Myths vs facts: Zink and allergy

Zinc is often marketed as a remedy for allergies, but the scientific evidence is limited. Fact: Zinc is essential for a healthy immune system, particularly for regulating inflammatory responses. Some studies suggest that zinc deficiency may be associated with increased allergy risk, such as hay fever or asthma. However, there is no robust clinical evidence that zinc supplementation effectively treats allergies in individuals without a deficiency. Myth: 'High-dose zinc cures allergies.' This is false. Excessive zinc intake (above 40 mg/day for adults) can be toxic, causing nausea, vomiting, and long-term copper deficiency. The claim that zinc acts as a natural antihistamine is overstated; its effect is weak and not comparable to medication. For allergy sufferers, a balanced diet with zinc-rich foods (e.g., pumpkin seeds, beef) is beneficial, but supplements should only be taken if a deficiency is confirmed and under medical supervision. In summary: Zinc supports immune function but is not an allergy cure. Evidence is based mainly on observational and mechanistic studies; robust randomized controlled trials are lacking.