In 2016, two Japanese reproductive biologists, Katsuhiko Hayashi and Mitinori Saitou, made an announcement in the journal Nature that read like a science-fiction novel. The researchers had taken skin ...

Human reproductive cloning is currently the subject of much debate around the world, involving a variety of ethical, religious, societal, scientific, and medical issues. This report from the National ...

Human reproduction exhibits marked temporal variation, with birth rates and conception outcomes fluctuating across the calendar year. These patterns arise from a complex interplay of environmental ...

Declining female fertility is a health issue that has received broad global attention. Oocyte quality is the key limiting factor of female fertility, and factors affecting oocyte quality involve the ...

Scientists have created human eggs containing genes from adult skin cells, a step that someday could help women who are infertile or gay couples have babies with their own genes but would also raise ...

To expand and promote research and data collection on reproductive health conditions, which are the leading causes of infertility, and provide training opportunities for medical professionals to learn ...

This workshop will explore the in vitro derivation of human gametes (eggs and sperm) from stem cells. Sessions will consider scientific and clinical goals motivating research in this field, technical ...

Scientists have detected microplastics — the tiny and pervasive fragments now found in our seas, drinking water, food and, increasingly, living tissue — in human semen and follicular fluid, according ...

Male infertility is a complex medical condition that affects millions of couples worldwide. Infertility is defined as the inability of a couple to conceive after one year of regular, unprotected ...