Regular smoking causes a 23% decrease in sperm density (concentration) and 13% decrease in motility (when averages are taken from nine separate studies). To a lesser extent, smoking causes an increased number of sperm with abnormal morphology (shape). Smoking causes toxicity to the seminal plasma (the fluid ejaculated with the sperm): sperm from non-smokers were [...]

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In 60% of all couples experiencing infertility, a male factor is involved. It is primarily a male factor in 40% of these couples and in an additional 20% of these couples, it is a combination of male and female factors. Therefore, when a couple is having trouble conceiving it makes sense not only to evaluate [...]

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Infertility, defined as the failure to achieve pregnancy after one year of unprotected intercourse, affects 10 to 20 percent of couples. At least 40 percent of the time, the woman is unable to conceive because her male partner has a physical problem. As with female fertility, male fertility is affected by what foods and nutrients [...]

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