Seven-day ejaculatory abstinence,
does it really help with Increase in serum testosterone?
research showsThe grade is C with 46 points. The surviving report is only 145.7% of baseline on day 7, P<0.01, from one uncontrolled repeated-measures dataset of 28 men. Absolute testosterone values, standard deviations, and test statistics were not reported, so effect size cannot be reconstructed.
ads claimKorean-language semen-retention and abstinence discussions often repeat the day-7 145.7% claim. Its English source is retracted and the Chinese predecessor appears to be the same 28-person dataset, so they cannot be presented as two confirmations.
Useful facts when choosing a product
- PubMed search: `(sexual abstinence OR ejaculation abstinence OR semen retention) AND testosterone AND (7 day OR day 7 OR 145.7)`, inception to 2026-08-07. Raw result count could not be confirmed. No independent day-7 145.7% reproduction was identified.
- Google Scholar search: `"145.7%" testosterone abstinence`, 1900 to 2026-08-07. Raw result count could not be confirmed. Results traced to the retracted paper or secondary citations rather than independent human replication.
- Crossref and publisher search: `Jiang testosterone ejaculation abstinence retraction`, 2000 to 2026-08-07. Raw result count could not be confirmed. The December 10, 2021 retraction and overlap with the 2002 Chinese paper were confirmed.
Chamgap Semantic Classification Code
Candidate index · review held
UNK.of-ejaculatory-abstinence.UNK.serum-testosterone.increase.UNKUnknown > of ejaculatory abstinence > Unknown > serum testosterone > Increase claim > Unknown
An automated migration candidate, not an issued permanent code; exact claim scope remains under review. This machine-generated migration candidate helps retrieval but is not a permanent assignment. The original verdict ID and URL remain authoritative.
What the research actually shows
A post-retraction search found no independent human sample reproducing the exact 145.7% day-7 value. A small study by Exton and colleagues addressed three weeks of abstinence, a different time point and design. Serum testosterone is a surrogate and does not establish improved symptoms, sexual function, fertility, or strength.
Why this is classified as C (46)
The 2002 and 2003 papers are the same 28-person dataset, not two trials. Only 145.7% of baseline and P<0.01 remain, without absolute values, standard deviations, or test statistics, so effect size cannot be reconstructed; the grade is C with 46 points.
Counterpoint. A transient laboratory pattern does not establish lasting testosterone elevation or improvements in strength or sexual function.
Rejudgment record. Cross-check applied — Excluding the retracted paper leaves one report of the same 28-person uncontrolled, small, short surrogate dataset
| Endpoint | S | Surrogate marker - laboratory or imaging measures |
| Replication | R1 | Single confirmatory trial |
| Independence | I1 | Mixed funding sources |
| Effect size | EX | The clinical size of the effect could not be judged |
Stored derived and displayed grades match; this is not a current recalculation or validity check (C).
Sub-claim grades by effect
This ingredient is marketed for several effects. A single overall grade blends strong and weak claims together, so each effect is graded separately here. The overall grade reflects the strongest disconfirming or core claim.
| Effect (sub-claim) | Grade | Basis |
|---|---|---|
| Serum testosterone reaches 145.7% on day 7 | C | Only one retracted/duplicate dataset supports the exact value. |
| Abstinence improves sexual function or strength | ? | These clinical outcomes were not measured by this evidence. |
Cross-check — AI research and Codex final gate
Evidence Table
| Study | Design | Sample | Funding | Endpoint | Result | Weight |
|---|---|---|---|---|---|---|
| Jiang M. 2002 Chinese predecessor report | Uncontrolled within-person daily repeated measures | 28 men | Funding not confirmed in accessible source | Serum testosterone | 145.7% of baseline on day 7, P<0.01 | Single predecessor apparently using the same data as the retracted English report |
Receipt — 3 References
All 3 cited sources were verified for existence at the original page (as of 2026-08-07).
Final verification and publication gate: Codex · Evidence date: 2026-08-07 · Corrections: none
Cite this verdict
[Chamgap] Seven-day ejaculatory abstinence x serum testosterone — Evidence Grade C·46. 3 cited sources checked. Source: https://chamgap.com/en/verdicts/mens/seven-day-ejaculation-abstinence-serum-testosterone/ · CC BY 4.0CC BY 4.0 — free to use with attribution; do not distort grades, numbers, or verdict meaning.
What this document does and does not do
Chamgap is an information source. It reports what research has and has not confirmed; it does not tell readers what to take or buy. That decision belongs to readers and, when needed, medical or legal professionals. This verdict reflects literature available up to the search date and may change as new research appears. Nothing here is medical advice.