Testosterone: what the evidence supports

3 graded interventions for testosterone, ranked by strength of evidence.

Overall grade: Grade C
Last revised: Jul 10, 2026; 3
graded outcomes: 0
references listed

Assembled by the app from other entries in this library. It adds no evidence of its own — follow the links to the entries it draws on.

1 at grade C · 2 at grade D — 3 graded rows

What is known

Each outcome with its grade (how strong the evidence is, A to D), the size of the effect where the entry records one, and how often studies agree.

Outcome	Grade	Effect size	Agreement
FenugreekInconsistent	Evidence grade C	Unclear	low
MacaNo change	Evidence grade D	Trivial	high
Tribulus TerrestrisNo increase	Evidence grade D	Trivial	high

FenugreekEvidence grade C
Inconsistent
Unclearlow
MacaEvidence grade D
No change
Trivialhigh
Tribulus TerrestrisEvidence grade D
No increase
Trivialhigh

What is uncertain

Read off the same rows as above. Nothing here is added that the entry does not itself record.

Thin evidence: Fenugreek (grade C); Maca (grade D); Tribulus Terrestris (grade D).

The evidence in words

The evidence map

This is the ranked evidence for testosterone: every compound in the knowledge base with a graded effect, best-supported first. Grades reflect replication and effect size, not popularity or marketing.

Best-supported

No intervention here reaches grade A or B — an honest reflection of how thin the evidence for testosterone still is.

Weaker or unproven

Fenugreek (grade C) — Inconsistent · Maca (grade D) — No change · Tribulus Terrestris (grade D) — No increase

Goes with

FenugreekGrade CEvidence grade C
MacaGrade DEvidence grade C
Tribulus TerrestrisGrade DEvidence grade D

Entries that share this one's tags or conditions.

Allergic rhinitis: what the evidence supports3 graded interventions for allergic rhinitis, ranked by strength of evidence.Evidence grade B
Antibiotic-associated diarrhea: what the evidence supports2 graded interventions for antibiotic-associated diarrhea, ranked by strength of evidence.Evidence grade B
Anxiety: what the evidence supports6 graded interventions for anxiety, ranked by strength of evidence.Evidence grade B
Benign prostatic hyperplasia: what the evidence supports3 graded interventions for benign prostatic hyperplasia, ranked by strength of evidence.Evidence grade C

Sources

This entry lists no references of its own — it is assembled from the entries it links to, whose sources are on their pages.

Last revised Jul 10, 2026. A grade is this entry's reading of the evidence, not medical advice.