In men with certain types of infertility, higher levels of selenium and N-acetyl-cysteine in semen are strongly linked to better sperm quality, including more sperm, better movement, and better shape.

Pro

Against

Evidence from Studies

Supporting (1)

Community contributions welcome

Efficacy of selenium and/or N-acetyl-cysteine for improving semen parameters in infertile men: a double-blind, placebo controlled, randomized study.

Randomized Controlled Trial

Human

2009 Feb

Contradicting (0)

Community contributions welcome

No contradicting evidence found

Source Study

Efficacy of selenium and/or N-acetyl-cysteine for improving semen parameters in infertile men: a double-blind, placebo controlled, randomized study.

Score: 68

DOI: 10.1016/j.juro.2008.10.015

Similar Assertions

In men with certain types of infertility, the total amount of selenium and N-acetyl-cysteine in semen is strongly linked to better sperm quality, including more sperm, better movement, and better shape.

97%

The benefits of selenium and N-acetyl-cysteine on sperm quality for men with certain types of infertility only last while they're taking the supplements, and may go away after stopping.

89%

This study doesn't show that selenium or N-acetyl-cysteine helps men with infertility from other causes have better sperm quality or fertility.

85%

Taking selenium or N-acetyl-cysteine for 6 months doesn't have enough data to know if it's safe long-term for men with certain types of infertility.

84%

Taking selenium or N-acetyl-cysteine for 6 months doesn't seem to help men with certain types of infertility have babies, even though it improves sperm quality.

81%