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The Human Effect Matrix looks at human studies to tell you what supplements affect Sperm Quality.
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| Grade | Level of Evidence [show legend] |
|---|---|
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Robust research conducted with repeated double-blind clinical trials |
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Multiple studies where at least two are double-blind and placebo controlled |
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Single double-blind study or multiple cohort studies |
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Uncontrolled or observational studies only |
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Level of Evidence
?
The amount of high quality evidence. The more
evidence, the more we can trust the results.
|
Supplement |
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 |
|---|---|---|---|---|
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Notable
|
High See all 10 studies |
There seems to be a notable and reliable benefit for infertile people, The most common dose is 2 g per day, and is probably the most reliable dose, though lower doses may have benefits as well.
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Notable
|
Very High See all 4 studies |
So far, trials are in agreement that there are general improvements in sperm quality, including motility, concentration, and count. All studies are limited to infertile participants and it's unclear what the effect in fertile participants would be.
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Minor
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Very High See all 4 studies |
Appears to enhance seminal quality (in a fairly general sense) but needs more studies against reference drugs to properly assess potency.
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