The Claim

Intermittent zinc supplementation in infants is associated with a mean increase in weight gain of 332 grams and length gain of 1.4 cm over six months, with standardized mean differences in weight-for-age and length-for-age Z-scores of 0.32 and 0.14, respectively.

Source: Efficacy of prophylactic intermittent zinc supplementation for reducing acute respiratory infections and diarrhoea 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
87score
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.

Quantitative
1 study reviewed
In plain English

Infants who receive intermittent zinc supplements gain an average of 332 grams more in weight and 1.4 centimeters more in length over six months compared to those who do not, with higher standardized growth scores for weight and length.

See the scientific wording

Intermittent zinc supplementation in infants is associated with a mean increase in weight gain of 332 grams and length gain of 1.4 cm over six months, with standardized mean differences in weight-for-age and length-for-age Z-scores of 0.32 and 0.14, respectively.

Why this might work

Zinc helps the gut heal and absorb more nutrients from food, while also helping cells divide and build more muscle, bone, and fat, which makes babies grow taller and heavier.

Verified mechanismbased on 1 study

What the research says

1 study
  1. Study: Efficacy of prophylactic intermittent zinc supplementation for reducing acute respiratory infections and diarrhoea in infants: A randomized controlled trial

    Babies who got zinc supplements a few times over several months grew taller and heavier than babies who didn’t get the supplements.

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.