Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

220 questions · 226 findings · 32 reviews

No studies found 70 · 31%GRADE not reported 51 · 22.6%Very low 39 · 17.3%Low 30 · 13.3%Moderate 29 · 12.8%High 7 · 3.1%

Foods fortified with zinc alone vs same foods without adding zinc

Stunting · general population of all age groups (including pregnant women) from any country, over two years of age

Foods fortified with zinc alone showed no clear difference in stunting (author defined) compared with same foods without adding zinc (low certainty).

1 finding from 1 review

Foods fortified with zinc alone vs same foods without adding zinc

Underweight · general population of all age groups (including pregnant women) from any country, over two years of age

Foods fortified with zinc alone showed no clear difference in underweight (author defined) compared with same foods without adding zinc (low certainty).

1 finding from 1 review

Zinc supplements vs Acupuncture

Outcome not reported · Patients with taste disturbances (dysgeusia/hypogeusia; idiopathic, zinc-deficient, or secondary to chronic renal failure)

The review found no eligible studies for this question.

1 finding from 1 review
  • Interventions for managing taste disturbances 2017 · Cochrane All outcomes
    Authors' conclusions: We were unable to draw any conclusions regarding the superiority of zinc supplements or acupuncture as none of the trials compared these interventions.
    0 studies
    No studies found

Zinc tape vs magnesium sulphate glycerin

Ulcer healing · ulceration caused by nerve damage in leprosy

It is very uncertain whether zinc tape changes primary outcome: healing of ulcers (number of ulcers healed after 1… compared with magnesium sulphate glycerin (very low certainty).

2 findings from 1 review

Zinc oxide and eugenol (ZOE) vs Zinc oxide and propolis (ZOP)

Outcome not reported · Children with extensive decay involving the dental pulp in primary teeth

The review found no eligible studies for this question.

1 finding from 1 review

Zinc oxide and eugenol (ZOE) vs Ozonated sesame oil-zinc oxide (ZO)

Outcome not reported · Children with extensive decay involving the dental pulp in primary teeth

The review found no eligible studies for this question.

1 finding from 1 review