Genetics

Sperm count 50% lower in sons of fathers who smoke

Studies have repeatedly linked maternal smoking during pregnancy with reduced sperm counts in male offspring. Now a research team at Lund University in Sweden has discovered that, independently of nicotine exposure from the ...

Health

Low sperm count not just a problem for fertility

A man's semen count is a marker of his general health, according to the largest study to date evaluating semen quality, reproductive function and metabolic risk in men referred for fertility evaluation. The study results, ...

Medical research

Long, mysterious strips of RNA contribute to low sperm count

Scientists have found distinctive portions of genetic material—known as lncRNAs—that help sperm develop. Male mice lacking a particular lncRNA have low sperm count, suggesting lncRNAs could represent novel infertility ...

Medical research

Racing sperm to boost results of in vitro fertilization

The World Health Organization estimates more than 70 million couples worldwide are unable to conceive each year, with close to a third of those cases attributable solely to issues with male fertility—including low sperm ...

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