Research
Micronutrients & recovery
Selenium supplementation improves semen quality (count, concentration, morphology, and motility) in men with low baseline selenium levels, as demonstrated in randomized controlled trials.
For men experiencing fertility issues, checking selenium levels is a low-cost, high-yield step. If levels are low, supplementation has been shown in RCTs to improve sperm count, motility, and morphology.
GoodSupportsHIGH confidence
In 64 men, Mistry [71] reported improvement in semen quality and fertility after selenium supplementation. The study was conducted in Scotland, with placebo control and randomized (RCT). These beneficial effects of selenium supplementation were reported in other RCTs conducted in Tunisia and Iran. This improvement includes the count, concentration, morphology and motility of sperm.
Why this rating
The paper cites multiple Randomized Controlled Trials (RCTs) across different populations (Scotland, Tunisia, Iran), indicating robust evidence.
Source
Selenium in the Environment, Metabolism and Involvement in Body Functions
Youcef Mehdi et al. · Molecules · 2013
DOI 10.3390/molecules18033292
narrative_reviewCited 733×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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