Partner selection ultimately happens in the woman’s reproductive tract: The female reproductive tract has the final say in human mate choice, according to new research from the University of Eastern Finland. Achieving pregnancy has been shown to be more likely between partners who carry dissimilar human leucocyte antigen (HLA) immune genes. Accordingly, humans are expected […]
Read More… from Partner selection occurs in female reproductive tract
Campaign group PET’s free-to-attend #EndOfAnonymity debate will hear from an international panel of experts on how the availability and popularity of direct-to-consumer (DTC) genetic testing is removing any certainty that sperm, egg or embryo donors can remain anonymous. What does this mean for donors, donor-conceived children and family members, and what responsibilities, if any, do […]
Multiple miscarriages may be linked to the poor quality of a man’s sperm, suggests new research. The early-stage study, from scientists at Imperial College London, investigated the sperm quality of 50 men whose partners had suffered three or more consecutive miscarriages. The research, published in the journal Clinical Chemistry, revealed that, compared to men whose […]
Kisspeptin, known as the master regulator of reproduction, not only has a crucial role in sperm and egg production, but may also boost reproductive behaviours. In a new study, scientists from Imperial College London investigated how the recently discovered hormone alters brain activity in healthy volunteers. In the new research, the scientists investigated how the […]
It doesn’t really surprise me that the UK is facing a major donated sperm shortage and many clinics are relying in imported sperm to keep up with demand. I was a prolific sperm donor when I was a young medical student, keen to help couples who couldn’t conceive and happy to receive the beer money […]
Sperm counts in men worldwide have declined by half over the past 50 years and are continuing to fall. ‘It does seem that sperm counts are falling, but it is hard to say exactly why that is happening,’ says Dr Jane Stewart, a consultant in reproductive medicine at Newcastle Fertility Centre. ‘The studies are conflicting. […]