Quick Navigation

Sperm Count

Research analysis led by Kamal Patel.
All content reviewed by the Examine.com Team. Published:
Last Updated:

Summary of Sperm Count

Primary Information, Benefits, Effects, and Important Facts

Scientific Information on Sperm Count


Human Effect Matrix

The Human Effect Matrix looks at human studies (it excludes animal and in vitro studies) to tell you what supplements affect sperm count
Grade Level of Evidence
Robust research conducted with repeated double-blind clinical trials
Multiple studies where at least two are double-blind and placebo controlled
Single double-blind study or multiple cohort studies
Uncontrolled or observational studies only
Level of Evidence
? The amount of high quality evidence. The more evidence, the more we can trust the results.
Outcome Magnitude of effect
? The direction and size of the supplement's impact on each outcome. Some supplements can have an increasing effect, others have a decreasing effect, and others have no effect.
Consistency of research results
? Scientific research does not always agree. HIGH or VERY HIGH means that most of the scientific research agrees.
Notes
grade-c Zinc Minor Moderate See 2 studies
An increase in sperm count has been noted in infertile men who also had low testosterone; it was ineffective in infertile men with normal testosterone
grade-c Astaxanthin - - See study
grade-c Saffron - Very High See 2 studies
Saffron supplementation does not appear to be effective in increasing sperm count in infertile men.
grade-c Tribulus terrestris  
grade-d Ashwagandha  
grade-d D-Aspartic Acid  
grade-d Ginger  

All comparative evidence is now gathered in our ​A-to-Z Supplement Reference.

The evidence for each separate supplement is still freely available ​here.