ScienceDaily (May 25, 2011) — Vitamin D is important for optimal reproductive function in both animals and humans. It has long been known that serum vitamin D level is important for reproductive function in various animals, but now researchers from the University of Copenhagen and Copenhagen University Hospital have shown that this relationship can also be demonstrated in humans.
A new study conducted in 300 normal men showed a positive correlation between the percentage of motile sperm and serum vitamin D levels. The study was recently published in the scientific journalHuman Reproduction, and showed additionally that stimulation of human spermatooza in the laboratory with activated vitamin D can increase their forward movement.
More studies needed
"Our study is not sufficient and should not be used to change existing treatment practices. However, it uncovers some of the functions of vitamin D and generates new hypotheses. This is an intriguing finding, because it suggests that vitamin D has an effect on sperm movement and function," explains Martin Blomberg Jensen from Copenhagen University Hospital.
"However, this finding is not sufficient in determining whether vitamin D supplements may improve sperm quality in normal or infertile males. This study is one in a line of studies indicating that vitamin D is necessary for male reproduction," says Martin Blomberg Jensen.
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