The Claim

A two-week zinc supplement in infants reduces the incidence of acute lower respiratory infections for at least five months after supplementation ends.

Source: Zinc supplementation for prevention of acute respiratory infections in infants: A randomized controlled trial

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
72score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Cause and effect
1 study reviewed
In plain English

Infants who took zinc supplements for two weeks had fewer acute lower respiratory infections for at least five months after stopping the supplements.

See the scientific wording

The protective effect of a two-week zinc supplement on acute lower respiratory infections persists for at least five months after supplementation ends, suggesting a durable, long-term impact on respiratory health in infants.

Why this might work

Zinc helps the thymus gland grow and train more T-cells that remember how to fight respiratory viruses. These trained T-cells stay in the lungs and airways for months, ready to stop infections before they spread.

Suggested mechanismbased on 1 study

What the research says

1 study

  1. Study: Zinc supplementation for prevention of acute respiratory infections in infants: A randomized controlled trial

    Giving babies zinc for just two weeks helped them get fewer serious breathing infections like pneumonia for the next five months, even after they stopped taking the zinc.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.