Tag: sperm
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Blasting sluggish sperm with ultrasound waves gets them moving
[ad_1] Sperm that don’t move fast enough may struggle to reach an egg, resulting in fertility issues Alexey Kotelnikov / Alamy Exposing immobile sperm to ultrasound waves gets them moving, a lab study has shown. Sperm that don’t move properly are a key cause of infertility, as it is harder for them to reach the…
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Why sperm counts are falling and what we can do to increase them
[ad_1] THE year was 1974. As newspaper columnists were busy wringing their hands over the development of in-vitro fertilisation and the prospect of “test-tube babies”, an alarming discovery about male fertility completely escaped their notice. Comparing contemporary semen samples with historical data, two doctors in Iowa named C. M. Kinloch Nelson and Raymond Bunge showed…
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Sperm counts are down worldwide and researchers are discovering why
[ad_1] THE year was 1974. As newspaper columnists were busy wringing their hands over the development of in-vitro fertilisation and the prospect of “test-tube babies”, an alarming discovery about male fertility completely escaped their notice. Comparing contemporary semen samples with historical data, two doctors in Iowa named C. M. Kinloch Nelson and Raymond Bunge showed…
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Sperm sense what they are swimming through and adapt their behaviour
[ad_1] Researchers studied bull sperm, which have similar structures and swimming patterns to human sperm DR T E THOMPSON/SCIENCE PHOTO LIBRARY Sperm change how they swim in response to different conditions in the vaginal tract. The ability to adjust to these conditions could be a measure of sperm health. If this is shown in future…