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Low sperm count means that the fluid (semen) you ejaculate during an orgasm contains fewer sperm than normal. A low sperm count is also called oligospermia (ol-ih-go-SPUR-me-uh). A complete absence of sperm is called azoospermia. Your sperm count is considered lower than normal if you have fewer than 15 million sperm per milliliter of semen. Having a low sperm count decreases the odds that one of your sperm will fertilize your partner's egg, resulting in pregnancy.
Research:This was a cohort study exploring whether the consumption of fruits and vegetables with high levels of pesticide residues is linked to lower semen quality. This type of study cannot prove cause and effect, as other factors could be causing any effects seen. However, in studies of this type, researchers try to take account of other factors that can affect a health outcome. In this case, for example, male fertility is known to be affected by lifestyle factors such as smoking and weight, which were taken into account in the statistical analyses.
Sperm DNA damage was negatively correlated with sperm motility and normal morphology. Overall, 39.7% (108 of 272) of semen samples had excessive sperm DNA damage. In contrast, only 15% (41 of 272) of motile sperm fractions had excessive DNA damage. Based on DNA results of motile sperm and semen characteristics, the proportion of men with excessive spermDNA damage was 26% in severe teratozoospermia, 17.5% in oligozoospermia, 12.5% in moderate teratozoospermia, and 4.6% in normozoospermia.
