Taking 30 mg of zinc daily for six months does not appear to reduce body fat, improve immune cell counts, or change blood sugar or cholesterol levels in middle-aged men with HIV who are already on effective HIV treatment.
Evidence from Studies
No evidence studies found yet.
What Would Prove This
Per GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this claim, ordered from strongest to weakest.
Whether zinc supplementation consistently fails to improve body composition or CD4+ T cell percentage in HIV-positive individuals on ART across diverse populations and dosages.
A systematic review and meta-analysis of all RCTs evaluating zinc supplementation (≥20 mg/day) for ≥6 months in adults with HIV on ART, with fat mass, BMI, and CD4+ T cell percentage as primary outcomes, stratified by baseline zinc status and ART regimen.
Whether zinc supplementation (30 mg/day) has no causal effect on fat mass, BMI, or CD4+ T cell percentage in HIV-positive individuals on ART compared to placebo.
A double-blind, placebo-controlled RCT of 150+ adults with HIV on stable ART, randomized to 30 mg/day zinc gluconate or placebo for 12 months, with primary outcomes of fat mass (DXA), BMI, and CD4+ T cell percentage, with power to detect a 2% change.
Whether habitual zinc intake predicts no change in body composition or CD4+ T cell percentage over time in HIV-positive individuals on ART.
A prospective cohort study of 400+ HIV-positive adults on ART, measuring dietary zinc intake quarterly and CD4+ T cell percentage and fat mass annually for 5 years, adjusting for ART adherence and nutritional status.
Whether serum zinc levels are not associated with fat mass or CD4+ T cell percentage in HIV-positive individuals on ART at a single time point.
A cross-sectional analysis of 300+ HIV-positive adults on ART, measuring serum zinc and body composition (DXA) and CD4+ T cell percentage simultaneously, adjusting for age, sex, and ART duration.
That zinc supplementation is unlikely to be a priority intervention for improving body composition or immune reconstitution in HIV-positive individuals on ART.
A consensus statement from a panel of HIV and nutrition experts reviewing all available RCTs and mechanistic data on zinc supplementation in HIV, concluding that evidence does not support routine use for body composition or CD4+ outcomes.