✅ Yes, the content seems to be true and authentic, as reported by several sources.

These include:

1. https://pubmed.ncbi.nlm.nih.gov/36577241/ - (Trust Score 9/10)

- A 2023 systematic review published in the Journal of Trace Elements in Medicine and Biology analyzing 38 studies (8 clinical and 30 animal studies) concluding that zinc deficiency reduces testosterone levels and zinc supplementation improves testosterone levels. The effect varies depending on basal zinc and testosterone levels, zinc dosage, and duration of supplementation.

2. https://pubmed.ncbi.nlm.nih.gov/8875519/ - (Trust Score 9/10)

- A clinical study showing that zinc supplementation of marginally zinc-deficient elderly men for six months resulted in an increase in serum testosterone from 8.3 to 16.0 nmol/L. The study also found that serum testosterone concentrations were significantly correlated with cellular zinc concentrations in cross-sectional analysis.

3. https://www.frontiersin.org/journals/endocrinology/articles/10.3389/fendo.2022.924338/full - (Trust Score 8/10)

- A peer-reviewed research article examining associations between trace elements and sex hormones, finding that zinc had positive relationships with testosterone in male adolescents and female children, with the study noting that medicinal doses of zinc supplementation might increase testosterone levels.

However, it's important to note that one study found zinc supplementation had no significant effect on testosterone in healthy male volunteers, suggesting the effect may be most pronounced in individuals with marginal or deficient zinc status rather than those who are already zinc-sufficient.