The Claim

The enzymatic conversion of testosterone to dihydrotestosterone requires zinc as a cofactor, and zinc deficiency impairs this conversion.

Source: This Plant Increased Testosterone 37% and Dropped Cortisol 16%

What the research says

Roughly balanced

Support and challenge are close. The picture may shift as more studies come in.

Supports
6score
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.

How it works
1 study reviewed
In plain English

Zinc is required for the body to convert testosterone into dihydrotestosterone, and low zinc levels reduce this conversion.

See the scientific wording

The conversion of testosterone to dihydrotestosterone (DHT) requires zinc as a cofactor, and zinc deficiency limits this conversion.

Why this might work

Zinc is needed for the enzyme that turns testosterone into dihydrotestosterone. When zinc is low, this enzyme does not work properly, so less dihydrotestosterone is made, even if testosterone levels are normal.

Supported mechanismbased on 1 study

What the research says

1 study
  1. Study: Effect of marginal or severe dietary zinc deficiency on testicular development and functions of the rat.

    When rats didn't get enough zinc, their bodies made much less testosterone and related hormones, including the one that turns testosterone into DHT. This suggests zinc is needed for that conversion to happen properly.

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.