Research tied to sperm markers, motility, and male hormone outcomes.
Human studies reported between-group improvement in DNA fragmentation.
combination-ingredient studies · Individual ingredient effects cannot be separated · Human studies · Includes patient groups · between-group comparison
Publications for this result: 1
Human studies reported both mixed results and a change with no confirmed comparison group for Sperm count.
Single-ingredient studies · Human studies · Includes patient groups · between-group comparison · comparator not confirmed
Publications for this result: 3
Human studies reported between-group improvement in Testosterone level.
Single-ingredient studies · Human studies · Population not specified · between-group comparison
Publications for this result: 1
Studies with an unspecified organism reported a change with no confirmed comparison group in clinical pregnancy odds.
Scope not specified · Includes patient groups · comparator not confirmed
Publications for this result: 1
Human studies reported a within-group change in sperm motility.
combination-ingredient studies · Individual ingredient effects cannot be separated · Human studies · Includes patient groups · within-group comparison
Publications for this result: 1
Human studies reported between-group improvement in Testosterone concentration.
combination-ingredient studies · Individual ingredient effects cannot be separated · Human studies · Includes patient groups · between-group comparison
Publications for this result: 1
Human studies reported a change with no confirmed comparison group in Total testosterone.
combination-ingredient studies · Individual ingredient effects cannot be separated · Human studies · Population not specified · comparator not confirmed
Publications for this result: 1
Human studies reported both between-group improvement and a within-group change for sperm motility; while Cell studies reported between-group improvement in sperm motility.
single- and combination-ingredient studies · Individual ingredient effects cannot be separated · Cell or in-vitro studies; indirect evidence · Includes human studies · Includes patient groups · between-group comparison · within-group comparison
Publications for this result: 3
Human studies reported between-group worsening in DNA fragmentation.
combination-ingredient studies · Individual ingredient effects cannot be separated · Human studies · Includes patient groups · between-group comparison
Publications for this result: 1
The counts above cover the selected topic only. This section also includes other topics, research without a confirmed comparison, animal or cell studies, and findings whose interpretation is held.
Caffeine
Some findings are held for review
Some papers have not cleared source or result review, so their findings are not summarized yet.
No confirmed result is available to summarize with study conditions.
A distinct publication count is not available.
Creatine
Some findings are held for review
Some papers have not cleared source or result review, so their findings are not summarized yet.
No confirmed result is available to summarize with study conditions.
Publications for this result: 1 (1 awaiting review included)
Ginkgo
Some findings are held for review
Some papers have not cleared source or result review, so their findings are not summarized yet.
No confirmed result is available to summarize with study conditions.
Publications for this result: 1 (1 awaiting review included)
Ginseng
Some findings are held for review
Some papers have not cleared source or result review, so their findings are not summarized yet.
No confirmed result is available to summarize with study conditions.
A distinct publication count is not available.
Quercetin
Some findings are held for review
Some papers have not cleared source or result review, so their findings are not summarized yet.
No confirmed result is available to summarize with study conditions.
Publications for this result: 1 (1 awaiting review included)
Selenium
Some findings are held for review
Some papers have not cleared source or result review, so their findings are not summarized yet.
No confirmed result is available to summarize with study conditions.
Publications for this result: 1 (1 awaiting review included)
Taurine
Some findings are held for review
Some papers have not cleared source or result review, so their findings are not summarized yet.
No confirmed result is available to summarize with study conditions.
A distinct publication count is not available.
Valerian
Some findings are held for review
Some papers have not cleared source or result review, so their findings are not summarized yet.
No confirmed result is available to summarize with study conditions.
A distinct publication count is not available.
Vitamin B12
Some findings are held for review
Some papers have not cleared source or result review, so their findings are not summarized yet.
No confirmed result is available to summarize with study conditions.
Publications for this result: 1 (1 awaiting review included)
Sperm count, motility, and hormone levels differ from pregnancy and birth outcomes. A laboratory change does not establish that the latter improved.
Distinguish fertility-treatment participants from a general population. Multi-ingredient trials may not isolate a single ingredient's contribution.